Copyright © 2000-2007 Minero Aoki
This program is free software. You can distribute/modify this program under the same terms of ruby.
FileUtils
Namespace for several file utility methods for copying, moving, removing, etc.
Module Functionsrequire 'fileutils'
FileUtils.cd(dir, **options)
FileUtils.cd(dir, **options) {|dir| block }
FileUtils.pwd()
FileUtils.mkdir(dir, **options)
FileUtils.mkdir(list, **options)
FileUtils.mkdir_p(dir, **options)
FileUtils.mkdir_p(list, **options)
FileUtils.rmdir(dir, **options)
FileUtils.rmdir(list, **options)
FileUtils.ln(target, link, **options)
FileUtils.ln(targets, dir, **options)
FileUtils.ln_s(target, link, **options)
FileUtils.ln_s(targets, dir, **options)
FileUtils.ln_sf(target, link, **options)
FileUtils.cp(src, dest, **options)
FileUtils.cp(list, dir, **options)
FileUtils.cp_r(src, dest, **options)
FileUtils.cp_r(list, dir, **options)
FileUtils.mv(src, dest, **options)
FileUtils.mv(list, dir, **options)
FileUtils.rm(list, **options)
FileUtils.rm_r(list, **options)
FileUtils.rm_rf(list, **options)
FileUtils.install(src, dest, **options)
FileUtils.chmod(mode, list, **options)
FileUtils.chmod_R(mode, list, **options)
FileUtils.chown(user, group, list, **options)
FileUtils.chown_R(user, group, list, **options)
FileUtils.touch(list, **options)
Possible options are:
:force forced operation (rewrite files if exist, remove directories if not empty, etc.);
:verbose print command to be run, in bash syntax, before performing it;
:preserve preserve object's group, user and modification time on copying;
:noop no changes are made (usable in combination with :verbose which will print the command to run)
Each method documents the options that it honours. See also ::commands, ::options and ::options_of methods to introspect which command have which options.
All methods that have the concept of a “source” file or directory can take either one file or a list of files in that argument. See the method documentation for examples.
There are some `low level' methods, which do not accept keyword arguments:
FileUtils.copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false) FileUtils.copy_file(src, dest, preserve = false, dereference = true) FileUtils.copy_stream(srcstream, deststream) FileUtils.remove_entry(path, force = false) FileUtils.remove_entry_secure(path, force = false) FileUtils.remove_file(path, force = false) FileUtils.compare_file(path_a, path_b) FileUtils.compare_stream(stream_a, stream_b) FileUtils.uptodate?(file, cmp_list)
FileUtils::Verbose
This module has all methods of FileUtils module, but it outputs messages before acting. This equates to passing the :verbose flag to methods in FileUtils.
FileUtils::NoWrite
This module has all methods of FileUtils module, but never changes files/directories. This equates to passing the :noop flag to methods in FileUtils.
FileUtils::DryRun
This module has all methods of FileUtils module, but never changes files/directories. This equates to passing the :noop and :verbose flags to methods in FileUtils.
# File lib/fileutils.rb, line 137
def cd(dir, verbose: nil, &block) # :yield: dir
fu_output_message "cd #{dir}" if verbose
result = Dir.chdir(dir, &block)
fu_output_message 'cd -' if verbose and block
result
end Changes the current directory to the directory dir.
If this method is called with block, resumes to the previous working directory after the block execution has finished.
FileUtils.cd('/') # change directory
FileUtils.cd('/', verbose: true) # change directory and report it
FileUtils.cd('/') do # change directory
# ... # do something
end # return to original directory
# File lib/fileutils.rb, line 1012
def chmod(mode, list, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message sprintf('chmod %s %s', mode_to_s(mode), list.join(' ')) if verbose
return if noop
list.each do |path|
Entry_.new(path).chmod(fu_mode(mode, path))
end
end Changes permission bits on the named files (in list) to the bit pattern represented by mode.
mode is the symbolic and absolute mode can be used.
Absolute mode is
FileUtils.chmod 0755, 'somecommand' FileUtils.chmod 0644, %w(my.rb your.rb his.rb her.rb) FileUtils.chmod 0755, '/usr/bin/ruby', verbose: true
Symbolic mode is
FileUtils.chmod "u=wrx,go=rx", 'somecommand' FileUtils.chmod "u=wr,go=rr", %w(my.rb your.rb his.rb her.rb) FileUtils.chmod "u=wrx,go=rx", '/usr/bin/ruby', verbose: true
is user, group, other mask.
is user's mask.
is group's mask.
is other's mask.
is write permission.
is read permission.
is execute permission.
is execute permission for directories only, must be used in conjunction with “+”
is uid, gid.
is sticky bit.
is added to a class given the specified mode.
Is removed from a given class given mode.
Is the exact nature of the class will be given a specified mode.
# File lib/fileutils.rb, line 1029
def chmod_R(mode, list, noop: nil, verbose: nil, force: nil)
list = fu_list(list)
fu_output_message sprintf('chmod -R%s %s %s',
(force ? 'f' : ''),
mode_to_s(mode), list.join(' ')) if verbose
return if noop
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chmod(fu_mode(mode, ent.path))
rescue
raise unless force
end
end
end
end Changes permission bits on the named files (in list) to the bit pattern represented by mode.
FileUtils.chmod_R 0700, "/tmp/app.#{$$}"
FileUtils.chmod_R "u=wrx", "/tmp/app.#{$$}"
# File lib/fileutils.rb, line 1057
def chown(user, group, list, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message sprintf('chown %s %s',
(group ? "#{user}:#{group}" : user || ':'),
list.join(' ')) if verbose
return if noop
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |path|
Entry_.new(path).chown uid, gid
end
end Changes owner and group on the named files (in list) to the user user and the group group. user and group may be an ID (Integer/String) or a name (String). If user or group is nil, this method does not change the attribute.
FileUtils.chown 'root', 'staff', '/usr/local/bin/ruby'
FileUtils.chown nil, 'bin', Dir.glob('/usr/bin/*'), verbose: true
# File lib/fileutils.rb, line 1081
def chown_R(user, group, list, noop: nil, verbose: nil, force: nil)
list = fu_list(list)
fu_output_message sprintf('chown -R%s %s %s',
(force ? 'f' : ''),
(group ? "#{user}:#{group}" : user || ':'),
list.join(' ')) if verbose
return if noop
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chown uid, gid
rescue
raise unless force
end
end
end
end Changes owner and group on the named files (in list) to the user user and the group group recursively. user and group may be an ID (Integer/String) or a name (String). If user or group is nil, this method does not change the attribute.
FileUtils.chown_R 'www', 'www', '/var/www/htdocs' FileUtils.chown_R 'cvs', 'cvs', '/var/cvs', verbose: true
# File lib/fileutils.rb, line 1688
def self.collect_method(opt)
OPT_TABLE.keys.select {|m| OPT_TABLE[m].include?(opt) }
end Returns an Array of methods names which have the option opt.
p FileUtils.collect_method(:preserve) #=> ["cp", "cp_r", "copy", "install"]
# File lib/fileutils.rb, line 1649 def self.commands OPT_TABLE.keys end
Returns an Array of names of high-level methods that accept any keyword arguments.
p FileUtils.commands #=> ["chmod", "cp", "cp_r", "install", ...]
# File lib/fileutils.rb, line 819
def compare_file(a, b)
return false unless File.size(a) == File.size(b)
File.open(a, 'rb') {|fa|
File.open(b, 'rb') {|fb|
return compare_stream(fa, fb)
}
}
end Returns true if the contents of a file a and a file b are identical.
FileUtils.compare_file('somefile', 'somefile') #=> true
FileUtils.compare_file('/dev/null', '/dev/urandom') #=> false
# File lib/fileutils.rb, line 837
def compare_stream(a, b)
bsize = fu_stream_blksize(a, b)
if RUBY_VERSION > "2.4"
sa = String.new(capacity: bsize)
sb = String.new(capacity: bsize)
else
sa = String.new
sb = String.new
end
begin
a.read(bsize, sa)
b.read(bsize, sb)
return true if sa.empty? && sb.empty?
end while sa == sb
false
end Returns true if the contents of a stream a and b are identical.
# File lib/fileutils.rb, line 492
def copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
if dereference_root
src = File.realpath(src)
end
Entry_.new(src, nil, false).wrap_traverse(proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && (File.file?(destent.path) || File.symlink?(destent.path))
ent.copy destent.path
end, proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
ent.copy_metadata destent.path if preserve
end)
end Copies a file system entry src to dest. If src is a directory, this method copies its contents recursively. This method preserves file types, c.f. symlink, directory… (FIFO, device files and etc. are not supported yet)
Both of src and dest must be a path name. src must exist, dest must not exist.
If preserve is true, this method preserves owner, group, and modified time. Permissions are copied regardless preserve.
If dereference_root is true, this method dereference tree root.
If remove_destination is true, this method removes each destination file before copy.
# File lib/fileutils.rb, line 512 def copy_file(src, dest, preserve = false, dereference = true) ent = Entry_.new(src, nil, dereference) ent.copy_file dest ent.copy_metadata dest if preserve end
Copies file contents of src to dest. Both of src and dest must be a path name.
# File lib/fileutils.rb, line 524 def copy_stream(src, dest) IO.copy_stream(src, dest) end
Copies stream src to dest. src must respond to read(n) and dest must respond to write(str).
# File lib/fileutils.rb, line 429
def cp(src, dest, preserve: nil, noop: nil, verbose: nil)
fu_output_message "cp#{preserve ? ' -p' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
copy_file s, d, preserve
end
end Copies a file content src to dest. If dest is a directory, copies src to dest/src.
If src is a list of files, then dest must be a directory.
FileUtils.cp 'eval.c', 'eval.c.org' FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6' FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6', verbose: true FileUtils.cp 'symlink', 'dest' # copy content, "dest" is not a symlink
# File lib/fileutils.rb, line 342
def cp_lr(src, dest, noop: nil, verbose: nil,
dereference_root: true, remove_destination: false)
fu_output_message "cp -lr#{remove_destination ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
link_entry s, d, dereference_root, remove_destination
end
end Hard link src to dest. If src is a directory, this method links all its contents recursively. If dest is a directory, links src to dest/src.
src can be a list of files.
If dereference_root is true, this method dereference tree root.
If remove_destination is true, this method removes each destination file before copy.
FileUtils.rm_r site_ruby + '/mylib', force: true
FileUtils.cp_lr 'lib/', site_ruby + '/mylib'
# Examples of linking several files to target directory.
FileUtils.cp_lr %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_lr Dir.glob('*.rb'), '/home/aamine/lib/ruby', noop: true, verbose: true
# If you want to link all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use the following code.
FileUtils.cp_lr 'src/.', 'dest' # cp_lr('src', 'dest') makes dest/src, but this doesn't.
# File lib/fileutils.rb, line 466
def cp_r(src, dest, preserve: nil, noop: nil, verbose: nil,
dereference_root: true, remove_destination: nil)
fu_output_message "cp -r#{preserve ? 'p' : ''}#{remove_destination ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
copy_entry s, d, preserve, dereference_root, remove_destination
end
end Copies src to dest. If src is a directory, this method copies all its contents recursively. If dest is a directory, copies src to dest/src.
src can be a list of files.
If dereference_root is true, this method dereference tree root.
If remove_destination is true, this method removes each destination file before copy.
# Installing Ruby library "mylib" under the site_ruby
FileUtils.rm_r site_ruby + '/mylib', force: true
FileUtils.cp_r 'lib/', site_ruby + '/mylib'
# Examples of copying several files to target directory.
FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_r Dir.glob('*.rb'), '/home/foo/lib/ruby', noop: true, verbose: true
# If you want to copy all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use following code.
FileUtils.cp_r 'src/.', 'dest' # cp_r('src', 'dest') makes dest/src,
# but this doesn't.
# File lib/fileutils.rb, line 1669
def self.have_option?(mid, opt)
li = OPT_TABLE[mid.to_s] or raise ArgumentError, "no such method: #{mid}"
li.include?(opt)
end Returns true if the method mid have an option opt.
p FileUtils.have_option?(:cp, :noop) #=> true p FileUtils.have_option?(:rm, :force) #=> true p FileUtils.have_option?(:rm, :preserve) #=> false
# File lib/fileutils.rb, line 865
def install(src, dest, mode: nil, owner: nil, group: nil, preserve: nil,
noop: nil, verbose: nil)
if verbose
msg = +"install -c"
msg << ' -p' if preserve
msg << ' -m ' << mode_to_s(mode) if mode
msg << " -o #{owner}" if owner
msg << " -g #{group}" if group
msg << ' ' << [src,dest].flatten.join(' ')
fu_output_message msg
end
return if noop
uid = fu_get_uid(owner)
gid = fu_get_gid(group)
fu_each_src_dest(src, dest) do |s, d|
st = File.stat(s)
unless File.exist?(d) and compare_file(s, d)
remove_file d, true
copy_file s, d
File.utime st.atime, st.mtime, d if preserve
File.chmod fu_mode(mode, st), d if mode
File.chown uid, gid, d if uid or gid
end
end
end If src is not same as dest, copies it and changes the permission mode to mode. If dest is a directory, destination is dest/src. This method removes destination before copy.
FileUtils.install 'ruby', '/usr/local/bin/ruby', mode: 0755, verbose: true FileUtils.install 'lib.rb', '/usr/local/lib/ruby/site_ruby', verbose: true
# File lib/fileutils.rb, line 409
def link_entry(src, dest, dereference_root = false, remove_destination = false)
Entry_.new(src, nil, dereference_root).traverse do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && File.file?(destent.path)
ent.link destent.path
end
end Hard links a file system entry src to dest. If src is a directory, this method links its contents recursively.
Both of src and dest must be a path name. src must exist, dest must not exist.
If dereference_root is true, this method dereferences the tree root.
If remove_destination is true, this method removes each destination file before copy.
# File lib/fileutils.rb, line 306
def ln(src, dest, force: nil, noop: nil, verbose: nil)
fu_output_message "ln#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if force
File.link s, d
end
end In the first form, creates a hard link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.
FileUtils.ln 'gcc', 'cc', verbose: true FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'
In the second form, creates a link dir/target pointing to target. In the third form, creates several hard links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.
FileUtils.cd '/sbin' FileUtils.ln %w(cp mv mkdir), '/bin' # Now /sbin/cp and /bin/cp are linked.
# File lib/fileutils.rb, line 372
def ln_s(src, dest, force: nil, noop: nil, verbose: nil)
fu_output_message "ln -s#{force ? 'f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if force
File.symlink s, d
end
end In the first form, creates a symbolic link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.
FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby' FileUtils.ln_s 'verylongsourcefilename.c', 'c', force: true
In the second form, creates a link dir/target pointing to target. In the third form, creates several symbolic links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.
FileUtils.ln_s Dir.glob('/bin/*.rb'), '/home/foo/bin'
# File lib/fileutils.rb, line 393 def ln_sf(src, dest, noop: nil, verbose: nil) ln_s src, dest, force: true, noop: noop, verbose: verbose end
Same as
FileUtils.ln_s(*args, force: true)
# File lib/fileutils.rb, line 180
def mkdir(list, mode: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "mkdir #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
return if noop
list.each do |dir|
fu_mkdir dir, mode
end
end Creates one or more directories.
FileUtils.mkdir 'test' FileUtils.mkdir %w(tmp data) FileUtils.mkdir 'notexist', noop: true # Does not really create. FileUtils.mkdir 'tmp', mode: 0700
# File lib/fileutils.rb, line 206
def mkdir_p(list, mode: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "mkdir -p #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
return *list if noop
list.each do |item|
path = remove_trailing_slash(item)
# optimize for the most common case
begin
fu_mkdir path, mode
next
rescue SystemCallError
next if File.directory?(path)
end
stack = []
until path == stack.last # dirname("/")=="/", dirname("C:/")=="C:/"
stack.push path
path = File.dirname(path)
break if File.directory?(path)
end
stack.pop if path == stack.last # root directory should exist
stack.reverse_each do |dir|
begin
fu_mkdir dir, mode
rescue SystemCallError
raise unless File.directory?(dir)
end
end
end
return *list
end Creates a directory and all its parent directories. For example,
FileUtils.mkdir_p '/usr/local/lib/ruby'
causes to make following directories, if they do not exist.
/usr
/usr/local
/usr/local/lib
/usr/local/lib/ruby
You can pass several directories at a time in a list.
# File lib/fileutils.rb, line 539
def mv(src, dest, force: nil, noop: nil, verbose: nil, secure: nil)
fu_output_message "mv#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
destent = Entry_.new(d, nil, true)
begin
if destent.exist?
if destent.directory?
raise Errno::EEXIST, d
end
end
begin
File.rename s, d
rescue Errno::EXDEV,
Errno::EPERM # move from unencrypted to encrypted dir (ext4)
copy_entry s, d, true
if secure
remove_entry_secure s, force
else
remove_entry s, force
end
end
rescue SystemCallError
raise unless force
end
end
end Moves file(s) src to dest. If file and dest exist on the different disk partition, the file is copied then the original file is removed.
FileUtils.mv 'badname.rb', 'goodname.rb'
FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', force: true # no error
FileUtils.mv %w(junk.txt dust.txt), '/home/foo/.trash/'
FileUtils.mv Dir.glob('test*.rb'), 'test', noop: true, verbose: true
# File lib/fileutils.rb, line 1658
def self.options
OPT_TABLE.values.flatten.uniq.map {|sym| sym.to_s }
end Returns an Array of option names.
p FileUtils.options #=> ["noop", "force", "verbose", "preserve", "mode"]
# File lib/fileutils.rb, line 1679
def self.options_of(mid)
OPT_TABLE[mid.to_s].map {|sym| sym.to_s }
end Returns an Array of option names of the method mid.
p FileUtils.options_of(:rm) #=> ["noop", "verbose", "force"]
# File lib/fileutils.rb, line 115 def pwd Dir.pwd end
Returns the name of the current directory.
# File lib/fileutils.rb, line 808 def remove_dir(path, force = false) remove_entry path, force # FIXME?? check if it is a directory end
Removes a directory dir and its contents recursively. This method ignores StandardError if force is true.
# File lib/fileutils.rb, line 780
def remove_entry(path, force = false)
Entry_.new(path).postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end This method removes a file system entry path. path might be a regular file, a directory, or something. If path is a directory, remove it recursively.
See also remove_entry_secure.
# File lib/fileutils.rb, line 687
def remove_entry_secure(path, force = false)
unless fu_have_symlink?
remove_entry path, force
return
end
fullpath = File.expand_path(path)
st = File.lstat(fullpath)
unless st.directory?
File.unlink fullpath
return
end
# is a directory.
parent_st = File.stat(File.dirname(fullpath))
unless parent_st.world_writable?
remove_entry path, force
return
end
unless parent_st.sticky?
raise ArgumentError, "parent directory is world writable, FileUtils#remove_entry_secure does not work; abort: #{path.inspect} (parent directory mode #{'%o' % parent_st.mode})"
end
# freeze tree root
euid = Process.euid
dot_file = fullpath + "/."
begin
File.open(dot_file) {|f|
unless fu_stat_identical_entry?(st, f.stat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
f.chown euid, -1
f.chmod 0700
}
rescue Errno::EISDIR # JRuby in non-native mode can't open files as dirs
File.lstat(dot_file).tap {|fstat|
unless fu_stat_identical_entry?(st, fstat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
File.chown euid, -1, dot_file
File.chmod 0700, dot_file
}
end
unless fu_stat_identical_entry?(st, File.lstat(fullpath))
# TOC-to-TOU attack?
File.unlink fullpath
return
end
# ---- tree root is frozen ----
root = Entry_.new(path)
root.preorder_traverse do |ent|
if ent.directory?
ent.chown euid, -1
ent.chmod 0700
end
end
root.postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end This method removes a file system entry path. path shall be a regular file, a directory, or something. If path is a directory, remove it recursively. This method is required to avoid TOCTTOU (time-of-check-to-time-of-use) local security vulnerability of rm_r. rm_r causes security hole when:
Parent directory is world writable (including /tmp).
Removing directory tree includes world writable directory.
The system has symbolic link.
To avoid this security hole, this method applies special preprocess. If path is a directory, this method chown(2) and chmod(2) all removing directories. This requires the current process is the owner of the removing whole directory tree, or is the super user (root).
WARNING: You must ensure that ALL parent directories cannot be moved by other untrusted users. For example, parent directories should not be owned by untrusted users, and should not be world writable except when the sticky bit set.
WARNING: Only the owner of the removing directory tree, or Unix super user (root) should invoke this method. Otherwise this method does not work.
For details of this security vulnerability, see Perl's case:
For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].
# File lib/fileutils.rb, line 797 def remove_file(path, force = false) Entry_.new(path).remove_file rescue raise unless force end
Removes a file path. This method ignores StandardError if force is true.
# File lib/fileutils.rb, line 579
def rm(list, force: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "rm#{force ? ' -f' : ''} #{list.join ' '}" if verbose
return if noop
list.each do |path|
remove_file path, force
end
end Remove file(s) specified in list. This method cannot remove directories. All StandardErrors are ignored when the :force option is set.
FileUtils.rm %w( junk.txt dust.txt )
FileUtils.rm Dir.glob('*.so')
FileUtils.rm 'NotExistFile', force: true # never raises exception
# File lib/fileutils.rb, line 598 def rm_f(list, noop: nil, verbose: nil) rm list, force: true, noop: noop, verbose: verbose end
Equivalent to
FileUtils.rm(list, force: true)
# File lib/fileutils.rb, line 625
def rm_r(list, force: nil, noop: nil, verbose: nil, secure: nil)
list = fu_list(list)
fu_output_message "rm -r#{force ? 'f' : ''} #{list.join ' '}" if verbose
return if noop
list.each do |path|
if secure
remove_entry_secure path, force
else
remove_entry path, force
end
end
end remove files list[0] list[1]… If list[n] is a directory, removes its all contents recursively. This method ignores StandardError when :force option is set.
FileUtils.rm_r Dir.glob('/tmp/*')
FileUtils.rm_r 'some_dir', force: true
WARNING: This method causes local vulnerability if one of parent directories or removing directory tree are world writable (including /tmp, whose permission is 1777), and the current process has strong privilege such as Unix super user (root), and the system has symbolic link. For secure removing, read the documentation of remove_entry_secure carefully, and set :secure option to true. Default is secure: false.
NOTE: This method calls remove_entry_secure if :secure option is set. See also remove_entry_secure.
# File lib/fileutils.rb, line 647 def rm_rf(list, noop: nil, verbose: nil, secure: nil) rm_r list, force: true, noop: noop, verbose: verbose, secure: secure end
Equivalent to
FileUtils.rm_r(list, force: true)
WARNING: This method causes local vulnerability. Read the documentation of rm_r first.
# File lib/fileutils.rb, line 266
def rmdir(list, parents: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "rmdir #{parents ? '-p ' : ''}#{list.join ' '}" if verbose
return if noop
list.each do |dir|
Dir.rmdir(dir = remove_trailing_slash(dir))
if parents
begin
until (parent = File.dirname(dir)) == '.' or parent == dir
dir = parent
Dir.rmdir(dir)
end
rescue Errno::ENOTEMPTY, Errno::EEXIST, Errno::ENOENT
end
end
end
end Removes one or more directories.
FileUtils.rmdir 'somedir' FileUtils.rmdir %w(somedir anydir otherdir) # Does not really remove directory; outputs message. FileUtils.rmdir 'somedir', verbose: true, noop: true
# File lib/fileutils.rb, line 1137
def touch(list, noop: nil, verbose: nil, mtime: nil, nocreate: nil)
list = fu_list(list)
t = mtime
if verbose
fu_output_message "touch #{nocreate ? '-c ' : ''}#{t ? t.strftime('-t %Y%m%d%H%M.%S ') : ''}#{list.join ' '}"
end
return if noop
list.each do |path|
created = nocreate
begin
File.utime(t, t, path)
rescue Errno::ENOENT
raise if created
File.open(path, 'a') {
;
}
created = true
retry if t
end
end
end Updates modification time (mtime) and access time (atime) of file(s) in list. Files are created if they don't exist.
FileUtils.touch 'timestamp'
FileUtils.touch Dir.glob('*.c'); system 'make'
# File lib/fileutils.rb, line 155
def uptodate?(new, old_list)
return false unless File.exist?(new)
new_time = File.mtime(new)
old_list.each do |old|
if File.exist?(old)
return false unless new_time > File.mtime(old)
end
end
true
end Returns true if new is newer than all old_list. Non-existent files are older than any file.
FileUtils.uptodate?('hello.o', %w(hello.c hello.h)) or \
system 'make hello.o'
# File lib/fileutils.rb, line 137
def cd(dir, verbose: nil, &block) # :yield: dir
fu_output_message "cd #{dir}" if verbose
result = Dir.chdir(dir, &block)
fu_output_message 'cd -' if verbose and block
result
end Changes the current directory to the directory dir.
If this method is called with block, resumes to the previous working directory after the block execution has finished.
FileUtils.cd('/') # change directory
FileUtils.cd('/', verbose: true) # change directory and report it
FileUtils.cd('/') do # change directory
# ... # do something
end # return to original directory
# File lib/fileutils.rb, line 1012
def chmod(mode, list, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message sprintf('chmod %s %s', mode_to_s(mode), list.join(' ')) if verbose
return if noop
list.each do |path|
Entry_.new(path).chmod(fu_mode(mode, path))
end
end Changes permission bits on the named files (in list) to the bit pattern represented by mode.
mode is the symbolic and absolute mode can be used.
Absolute mode is
FileUtils.chmod 0755, 'somecommand' FileUtils.chmod 0644, %w(my.rb your.rb his.rb her.rb) FileUtils.chmod 0755, '/usr/bin/ruby', verbose: true
Symbolic mode is
FileUtils.chmod "u=wrx,go=rx", 'somecommand' FileUtils.chmod "u=wr,go=rr", %w(my.rb your.rb his.rb her.rb) FileUtils.chmod "u=wrx,go=rx", '/usr/bin/ruby', verbose: true
is user, group, other mask.
is user's mask.
is group's mask.
is other's mask.
is write permission.
is read permission.
is execute permission.
is execute permission for directories only, must be used in conjunction with “+”
is uid, gid.
is sticky bit.
is added to a class given the specified mode.
Is removed from a given class given mode.
Is the exact nature of the class will be given a specified mode.
# File lib/fileutils.rb, line 1029
def chmod_R(mode, list, noop: nil, verbose: nil, force: nil)
list = fu_list(list)
fu_output_message sprintf('chmod -R%s %s %s',
(force ? 'f' : ''),
mode_to_s(mode), list.join(' ')) if verbose
return if noop
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chmod(fu_mode(mode, ent.path))
rescue
raise unless force
end
end
end
end Changes permission bits on the named files (in list) to the bit pattern represented by mode.
FileUtils.chmod_R 0700, "/tmp/app.#{$$}"
FileUtils.chmod_R "u=wrx", "/tmp/app.#{$$}"
# File lib/fileutils.rb, line 1057
def chown(user, group, list, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message sprintf('chown %s %s',
(group ? "#{user}:#{group}" : user || ':'),
list.join(' ')) if verbose
return if noop
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |path|
Entry_.new(path).chown uid, gid
end
end Changes owner and group on the named files (in list) to the user user and the group group. user and group may be an ID (Integer/String) or a name (String). If user or group is nil, this method does not change the attribute.
FileUtils.chown 'root', 'staff', '/usr/local/bin/ruby'
FileUtils.chown nil, 'bin', Dir.glob('/usr/bin/*'), verbose: true
# File lib/fileutils.rb, line 1081
def chown_R(user, group, list, noop: nil, verbose: nil, force: nil)
list = fu_list(list)
fu_output_message sprintf('chown -R%s %s %s',
(force ? 'f' : ''),
(group ? "#{user}:#{group}" : user || ':'),
list.join(' ')) if verbose
return if noop
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chown uid, gid
rescue
raise unless force
end
end
end
end Changes owner and group on the named files (in list) to the user user and the group group recursively. user and group may be an ID (Integer/String) or a name (String). If user or group is nil, this method does not change the attribute.
FileUtils.chown_R 'www', 'www', '/var/www/htdocs' FileUtils.chown_R 'cvs', 'cvs', '/var/cvs', verbose: true
# File lib/fileutils.rb, line 819
def compare_file(a, b)
return false unless File.size(a) == File.size(b)
File.open(a, 'rb') {|fa|
File.open(b, 'rb') {|fb|
return compare_stream(fa, fb)
}
}
end Returns true if the contents of a file a and a file b are identical.
FileUtils.compare_file('somefile', 'somefile') #=> true
FileUtils.compare_file('/dev/null', '/dev/urandom') #=> false
# File lib/fileutils.rb, line 837
def compare_stream(a, b)
bsize = fu_stream_blksize(a, b)
if RUBY_VERSION > "2.4"
sa = String.new(capacity: bsize)
sb = String.new(capacity: bsize)
else
sa = String.new
sb = String.new
end
begin
a.read(bsize, sa)
b.read(bsize, sb)
return true if sa.empty? && sb.empty?
end while sa == sb
false
end Returns true if the contents of a stream a and b are identical.
# File lib/fileutils.rb, line 492
def copy_entry(src, dest, preserve = false, dereference_root = false, remove_destination = false)
if dereference_root
src = File.realpath(src)
end
Entry_.new(src, nil, false).wrap_traverse(proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && (File.file?(destent.path) || File.symlink?(destent.path))
ent.copy destent.path
end, proc do |ent|
destent = Entry_.new(dest, ent.rel, false)
ent.copy_metadata destent.path if preserve
end)
end Copies a file system entry src to dest. If src is a directory, this method copies its contents recursively. This method preserves file types, c.f. symlink, directory… (FIFO, device files and etc. are not supported yet)
Both of src and dest must be a path name. src must exist, dest must not exist.
If preserve is true, this method preserves owner, group, and modified time. Permissions are copied regardless preserve.
If dereference_root is true, this method dereference tree root.
If remove_destination is true, this method removes each destination file before copy.
# File lib/fileutils.rb, line 512 def copy_file(src, dest, preserve = false, dereference = true) ent = Entry_.new(src, nil, dereference) ent.copy_file dest ent.copy_metadata dest if preserve end
Copies file contents of src to dest. Both of src and dest must be a path name.
# File lib/fileutils.rb, line 524 def copy_stream(src, dest) IO.copy_stream(src, dest) end
Copies stream src to dest. src must respond to read(n) and dest must respond to write(str).
# File lib/fileutils.rb, line 429
def cp(src, dest, preserve: nil, noop: nil, verbose: nil)
fu_output_message "cp#{preserve ? ' -p' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
copy_file s, d, preserve
end
end Copies a file content src to dest. If dest is a directory, copies src to dest/src.
If src is a list of files, then dest must be a directory.
FileUtils.cp 'eval.c', 'eval.c.org' FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6' FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6', verbose: true FileUtils.cp 'symlink', 'dest' # copy content, "dest" is not a symlink
# File lib/fileutils.rb, line 342
def cp_lr(src, dest, noop: nil, verbose: nil,
dereference_root: true, remove_destination: false)
fu_output_message "cp -lr#{remove_destination ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
link_entry s, d, dereference_root, remove_destination
end
end Hard link src to dest. If src is a directory, this method links all its contents recursively. If dest is a directory, links src to dest/src.
src can be a list of files.
If dereference_root is true, this method dereference tree root.
If remove_destination is true, this method removes each destination file before copy.
FileUtils.rm_r site_ruby + '/mylib', force: true
FileUtils.cp_lr 'lib/', site_ruby + '/mylib'
# Examples of linking several files to target directory.
FileUtils.cp_lr %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_lr Dir.glob('*.rb'), '/home/aamine/lib/ruby', noop: true, verbose: true
# If you want to link all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use the following code.
FileUtils.cp_lr 'src/.', 'dest' # cp_lr('src', 'dest') makes dest/src, but this doesn't.
# File lib/fileutils.rb, line 466
def cp_r(src, dest, preserve: nil, noop: nil, verbose: nil,
dereference_root: true, remove_destination: nil)
fu_output_message "cp -r#{preserve ? 'p' : ''}#{remove_destination ? ' --remove-destination' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
copy_entry s, d, preserve, dereference_root, remove_destination
end
end Copies src to dest. If src is a directory, this method copies all its contents recursively. If dest is a directory, copies src to dest/src.
src can be a list of files.
If dereference_root is true, this method dereference tree root.
If remove_destination is true, this method removes each destination file before copy.
# Installing Ruby library "mylib" under the site_ruby
FileUtils.rm_r site_ruby + '/mylib', force: true
FileUtils.cp_r 'lib/', site_ruby + '/mylib'
# Examples of copying several files to target directory.
FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
FileUtils.cp_r Dir.glob('*.rb'), '/home/foo/lib/ruby', noop: true, verbose: true
# If you want to copy all contents of a directory instead of the
# directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# use following code.
FileUtils.cp_r 'src/.', 'dest' # cp_r('src', 'dest') makes dest/src,
# but this doesn't.
# File lib/fileutils.rb, line 865
def install(src, dest, mode: nil, owner: nil, group: nil, preserve: nil,
noop: nil, verbose: nil)
if verbose
msg = +"install -c"
msg << ' -p' if preserve
msg << ' -m ' << mode_to_s(mode) if mode
msg << " -o #{owner}" if owner
msg << " -g #{group}" if group
msg << ' ' << [src,dest].flatten.join(' ')
fu_output_message msg
end
return if noop
uid = fu_get_uid(owner)
gid = fu_get_gid(group)
fu_each_src_dest(src, dest) do |s, d|
st = File.stat(s)
unless File.exist?(d) and compare_file(s, d)
remove_file d, true
copy_file s, d
File.utime st.atime, st.mtime, d if preserve
File.chmod fu_mode(mode, st), d if mode
File.chown uid, gid, d if uid or gid
end
end
end If src is not same as dest, copies it and changes the permission mode to mode. If dest is a directory, destination is dest/src. This method removes destination before copy.
FileUtils.install 'ruby', '/usr/local/bin/ruby', mode: 0755, verbose: true FileUtils.install 'lib.rb', '/usr/local/lib/ruby/site_ruby', verbose: true
# File lib/fileutils.rb, line 409
def link_entry(src, dest, dereference_root = false, remove_destination = false)
Entry_.new(src, nil, dereference_root).traverse do |ent|
destent = Entry_.new(dest, ent.rel, false)
File.unlink destent.path if remove_destination && File.file?(destent.path)
ent.link destent.path
end
end Hard links a file system entry src to dest. If src is a directory, this method links its contents recursively.
Both of src and dest must be a path name. src must exist, dest must not exist.
If dereference_root is true, this method dereferences the tree root.
If remove_destination is true, this method removes each destination file before copy.
# File lib/fileutils.rb, line 306
def ln(src, dest, force: nil, noop: nil, verbose: nil)
fu_output_message "ln#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if force
File.link s, d
end
end In the first form, creates a hard link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.
FileUtils.ln 'gcc', 'cc', verbose: true FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'
In the second form, creates a link dir/target pointing to target. In the third form, creates several hard links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.
FileUtils.cd '/sbin' FileUtils.ln %w(cp mv mkdir), '/bin' # Now /sbin/cp and /bin/cp are linked.
# File lib/fileutils.rb, line 372
def ln_s(src, dest, force: nil, noop: nil, verbose: nil)
fu_output_message "ln -s#{force ? 'f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if force
File.symlink s, d
end
end In the first form, creates a symbolic link link which points to target. If link already exists, raises Errno::EEXIST. But if the force option is set, overwrites link.
FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby' FileUtils.ln_s 'verylongsourcefilename.c', 'c', force: true
In the second form, creates a link dir/target pointing to target. In the third form, creates several symbolic links in the directory dir, pointing to each item in targets. If dir is not a directory, raises Errno::ENOTDIR.
FileUtils.ln_s Dir.glob('/bin/*.rb'), '/home/foo/bin'
# File lib/fileutils.rb, line 393 def ln_sf(src, dest, noop: nil, verbose: nil) ln_s src, dest, force: true, noop: noop, verbose: verbose end
Same as
FileUtils.ln_s(*args, force: true)
# File lib/fileutils.rb, line 180
def mkdir(list, mode: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "mkdir #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
return if noop
list.each do |dir|
fu_mkdir dir, mode
end
end Creates one or more directories.
FileUtils.mkdir 'test' FileUtils.mkdir %w(tmp data) FileUtils.mkdir 'notexist', noop: true # Does not really create. FileUtils.mkdir 'tmp', mode: 0700
# File lib/fileutils.rb, line 206
def mkdir_p(list, mode: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "mkdir -p #{mode ? ('-m %03o ' % mode) : ''}#{list.join ' '}" if verbose
return *list if noop
list.each do |item|
path = remove_trailing_slash(item)
# optimize for the most common case
begin
fu_mkdir path, mode
next
rescue SystemCallError
next if File.directory?(path)
end
stack = []
until path == stack.last # dirname("/")=="/", dirname("C:/")=="C:/"
stack.push path
path = File.dirname(path)
break if File.directory?(path)
end
stack.pop if path == stack.last # root directory should exist
stack.reverse_each do |dir|
begin
fu_mkdir dir, mode
rescue SystemCallError
raise unless File.directory?(dir)
end
end
end
return *list
end Creates a directory and all its parent directories. For example,
FileUtils.mkdir_p '/usr/local/lib/ruby'
causes to make following directories, if they do not exist.
/usr
/usr/local
/usr/local/lib
/usr/local/lib/ruby
You can pass several directories at a time in a list.
# File lib/fileutils.rb, line 539
def mv(src, dest, force: nil, noop: nil, verbose: nil, secure: nil)
fu_output_message "mv#{force ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if verbose
return if noop
fu_each_src_dest(src, dest) do |s, d|
destent = Entry_.new(d, nil, true)
begin
if destent.exist?
if destent.directory?
raise Errno::EEXIST, d
end
end
begin
File.rename s, d
rescue Errno::EXDEV,
Errno::EPERM # move from unencrypted to encrypted dir (ext4)
copy_entry s, d, true
if secure
remove_entry_secure s, force
else
remove_entry s, force
end
end
rescue SystemCallError
raise unless force
end
end
end Moves file(s) src to dest. If file and dest exist on the different disk partition, the file is copied then the original file is removed.
FileUtils.mv 'badname.rb', 'goodname.rb'
FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', force: true # no error
FileUtils.mv %w(junk.txt dust.txt), '/home/foo/.trash/'
FileUtils.mv Dir.glob('test*.rb'), 'test', noop: true, verbose: true
# File lib/fileutils.rb, line 115 def pwd Dir.pwd end
Returns the name of the current directory.
# File lib/fileutils.rb, line 808 def remove_dir(path, force = false) remove_entry path, force # FIXME?? check if it is a directory end
Removes a directory dir and its contents recursively. This method ignores StandardError if force is true.
# File lib/fileutils.rb, line 780
def remove_entry(path, force = false)
Entry_.new(path).postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end This method removes a file system entry path. path might be a regular file, a directory, or something. If path is a directory, remove it recursively.
See also remove_entry_secure.
# File lib/fileutils.rb, line 687
def remove_entry_secure(path, force = false)
unless fu_have_symlink?
remove_entry path, force
return
end
fullpath = File.expand_path(path)
st = File.lstat(fullpath)
unless st.directory?
File.unlink fullpath
return
end
# is a directory.
parent_st = File.stat(File.dirname(fullpath))
unless parent_st.world_writable?
remove_entry path, force
return
end
unless parent_st.sticky?
raise ArgumentError, "parent directory is world writable, FileUtils#remove_entry_secure does not work; abort: #{path.inspect} (parent directory mode #{'%o' % parent_st.mode})"
end
# freeze tree root
euid = Process.euid
dot_file = fullpath + "/."
begin
File.open(dot_file) {|f|
unless fu_stat_identical_entry?(st, f.stat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
f.chown euid, -1
f.chmod 0700
}
rescue Errno::EISDIR # JRuby in non-native mode can't open files as dirs
File.lstat(dot_file).tap {|fstat|
unless fu_stat_identical_entry?(st, fstat)
# symlink (TOC-to-TOU attack?)
File.unlink fullpath
return
end
File.chown euid, -1, dot_file
File.chmod 0700, dot_file
}
end
unless fu_stat_identical_entry?(st, File.lstat(fullpath))
# TOC-to-TOU attack?
File.unlink fullpath
return
end
# ---- tree root is frozen ----
root = Entry_.new(path)
root.preorder_traverse do |ent|
if ent.directory?
ent.chown euid, -1
ent.chmod 0700
end
end
root.postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end This method removes a file system entry path. path shall be a regular file, a directory, or something. If path is a directory, remove it recursively. This method is required to avoid TOCTTOU (time-of-check-to-time-of-use) local security vulnerability of rm_r. rm_r causes security hole when:
Parent directory is world writable (including /tmp).
Removing directory tree includes world writable directory.
The system has symbolic link.
To avoid this security hole, this method applies special preprocess. If path is a directory, this method chown(2) and chmod(2) all removing directories. This requires the current process is the owner of the removing whole directory tree, or is the super user (root).
WARNING: You must ensure that ALL parent directories cannot be moved by other untrusted users. For example, parent directories should not be owned by untrusted users, and should not be world writable except when the sticky bit set.
WARNING: Only the owner of the removing directory tree, or Unix super user (root) should invoke this method. Otherwise this method does not work.
For details of this security vulnerability, see Perl's case:
For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].
# File lib/fileutils.rb, line 797 def remove_file(path, force = false) Entry_.new(path).remove_file rescue raise unless force end
Removes a file path. This method ignores StandardError if force is true.
# File lib/fileutils.rb, line 579
def rm(list, force: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "rm#{force ? ' -f' : ''} #{list.join ' '}" if verbose
return if noop
list.each do |path|
remove_file path, force
end
end Remove file(s) specified in list. This method cannot remove directories. All StandardErrors are ignored when the :force option is set.
FileUtils.rm %w( junk.txt dust.txt )
FileUtils.rm Dir.glob('*.so')
FileUtils.rm 'NotExistFile', force: true # never raises exception
# File lib/fileutils.rb, line 598 def rm_f(list, noop: nil, verbose: nil) rm list, force: true, noop: noop, verbose: verbose end
Equivalent to
FileUtils.rm(list, force: true)
# File lib/fileutils.rb, line 625
def rm_r(list, force: nil, noop: nil, verbose: nil, secure: nil)
list = fu_list(list)
fu_output_message "rm -r#{force ? 'f' : ''} #{list.join ' '}" if verbose
return if noop
list.each do |path|
if secure
remove_entry_secure path, force
else
remove_entry path, force
end
end
end remove files list[0] list[1]… If list[n] is a directory, removes its all contents recursively. This method ignores StandardError when :force option is set.
FileUtils.rm_r Dir.glob('/tmp/*')
FileUtils.rm_r 'some_dir', force: true
WARNING: This method causes local vulnerability if one of parent directories or removing directory tree are world writable (including /tmp, whose permission is 1777), and the current process has strong privilege such as Unix super user (root), and the system has symbolic link. For secure removing, read the documentation of remove_entry_secure carefully, and set :secure option to true. Default is secure: false.
NOTE: This method calls remove_entry_secure if :secure option is set. See also remove_entry_secure.
# File lib/fileutils.rb, line 647 def rm_rf(list, noop: nil, verbose: nil, secure: nil) rm_r list, force: true, noop: noop, verbose: verbose, secure: secure end
Equivalent to
FileUtils.rm_r(list, force: true)
WARNING: This method causes local vulnerability. Read the documentation of rm_r first.
# File lib/fileutils.rb, line 266
def rmdir(list, parents: nil, noop: nil, verbose: nil)
list = fu_list(list)
fu_output_message "rmdir #{parents ? '-p ' : ''}#{list.join ' '}" if verbose
return if noop
list.each do |dir|
Dir.rmdir(dir = remove_trailing_slash(dir))
if parents
begin
until (parent = File.dirname(dir)) == '.' or parent == dir
dir = parent
Dir.rmdir(dir)
end
rescue Errno::ENOTEMPTY, Errno::EEXIST, Errno::ENOENT
end
end
end
end Removes one or more directories.
FileUtils.rmdir 'somedir' FileUtils.rmdir %w(somedir anydir otherdir) # Does not really remove directory; outputs message. FileUtils.rmdir 'somedir', verbose: true, noop: true
# File lib/fileutils.rb, line 1137
def touch(list, noop: nil, verbose: nil, mtime: nil, nocreate: nil)
list = fu_list(list)
t = mtime
if verbose
fu_output_message "touch #{nocreate ? '-c ' : ''}#{t ? t.strftime('-t %Y%m%d%H%M.%S ') : ''}#{list.join ' '}"
end
return if noop
list.each do |path|
created = nocreate
begin
File.utime(t, t, path)
rescue Errno::ENOENT
raise if created
File.open(path, 'a') {
;
}
created = true
retry if t
end
end
end Updates modification time (mtime) and access time (atime) of file(s) in list. Files are created if they don't exist.
FileUtils.touch 'timestamp'
FileUtils.touch Dir.glob('*.c'); system 'make'
# File lib/fileutils.rb, line 155
def uptodate?(new, old_list)
return false unless File.exist?(new)
new_time = File.mtime(new)
old_list.each do |old|
if File.exist?(old)
return false unless new_time > File.mtime(old)
end
end
true
end Returns true if new is newer than all old_list. Non-existent files are older than any file.
FileUtils.uptodate?('hello.o', %w(hello.c hello.h)) or \
system 'make hello.o'
Ruby Core © 1993–2020 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.