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.
require '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
.
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 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 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 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
.
FileUtils.chmod_R 0700, "/tmp/app.#{$$}" FileUtils.chmod_R "u=wrx", "/tmp/app.#{$$}"
# File 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 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 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
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 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
Returns an Array of methods names which have the option opt
.
p FileUtils.collect_method(:preserve) #=> ["cp", "cp_r", "copy", "install"]
# File fileutils.rb, line 1688 def self.collect_method(opt) OPT_TABLE.keys.select {|m| OPT_TABLE[m].include?(opt) } end
Returns an Array of names of high-level methods that accept any keyword arguments.
p FileUtils.commands #=> ["chmod", "cp", "cp_r", "install", ...]
# File fileutils.rb, line 1649 def self.commands OPT_TABLE.keys 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 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 stream a
and b
are identical.
# File 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
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 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 file contents of src
to dest
. Both of src
and dest
must be a path name.
# File 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 stream src
to dest
. src
must respond to read(n) and dest
must respond to write(str).
# File fileutils.rb, line 524 def copy_stream(src, dest) IO.copy_stream(src, dest) 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 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
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 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
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 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
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 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
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 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
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 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
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 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 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 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
Same as
FileUtils.ln_s(*args, force: true)
# File fileutils.rb, line 393 def ln_sf(src, dest, noop: nil, verbose: nil) ln_s src, dest, force: true, noop: noop, verbose: verbose 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 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 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 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
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 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
Returns an Array of option names.
p FileUtils.options #=> ["noop", "force", "verbose", "preserve", "mode"]
# File fileutils.rb, line 1658 def self.options OPT_TABLE.values.flatten.uniq.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 fileutils.rb, line 1679 def self.options_of(mid) OPT_TABLE[mid.to_s].map {|sym| sym.to_s } end
Returns the name of the current directory.
# File fileutils.rb, line 115 def pwd Dir.pwd end
Removes a directory dir
and its contents recursively. This method ignores StandardError if force
is true.
# File fileutils.rb, line 808 def remove_dir(path, force = false) remove_entry path, force # FIXME?? check if it is a directory 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 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
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 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
Removes a file path
. This method ignores StandardError if force
is true.
# File fileutils.rb, line 797 def remove_file(path, force = false) Entry_.new(path).remove_file rescue raise unless force 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 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
Equivalent to
FileUtils.rm(list, force: true)
# File fileutils.rb, line 598 def rm_f(list, noop: nil, verbose: nil) rm list, force: true, noop: noop, verbose: verbose 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 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
Equivalent to
FileUtils.rm_r(list, force: true)
WARNING: This method causes local vulnerability. Read the documentation of rm_r
first.
# File 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
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 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
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 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
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 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