* cat: (coreutils)cat invocation. Concatenate and write files.
* chcon: (coreutils)chcon invocation. Change SELinux CTX of files.
* chgrp: (coreutils)chgrp invocation. Change file groups.
-* chmod: (coreutils)chmod invocation. Change file permissions.
-* chown: (coreutils)chown invocation. Change file owners/groups.
+* chmod: (coreutils)chmod invocation. Change access permissions.
+* chown: (coreutils)chown invocation. Change file owners and groups.
* chroot: (coreutils)chroot invocation. Specify the root directory.
* cksum: (coreutils)cksum invocation. Print POSIX CRC checksum.
* comm: (coreutils)comm invocation. Compare sorted files by line.
@end macro
@macro optSi
-@itemx --si
+@item --si
@opindex --si
@cindex SI output
Append an SI-style abbreviation to each size, such as @samp{M} for
@end macro
@macro optStripTrailingSlashes
-@itemx @w{@kbd{--strip-trailing-slashes}}
+@item @w{@kbd{--strip-trailing-slashes}}
@opindex --strip-trailing-slashes
@cindex stripping trailing slashes
Remove any trailing slashes from each @var{source} argument.
Fill output lines up to @var{width} characters (default 75 or @var{goal}
plus 10, if @var{goal} is provided).
-@itemx -g @var{goal}
+@item -g @var{goal}
@itemx --goal=@var{goal}
@opindex -g
@opindex --goal
print all but the last @var{k} bytes of each file.
@multiplierSuffixes{k}
-@itemx -n @var{k}
+@item -n @var{k}
@itemx --lines=@var{k}
@opindex -n
@opindex --lines
will attempt to reopen a file when it is removed. Should this fail, tail
will keep trying until it becomes accessible again.
-@itemx --retry
+@item --retry
@opindex --retry
This option is useful mainly when following by name (i.e., with
@option{--follow=name}).
exist or is otherwise inaccessible, it reports that fact and
never checks it again.
-@itemx --sleep-interval=@var{number}
+@item --sleep-interval=@var{number}
@opindex --sleep-interval
Change the number of seconds to wait between iterations (the default is 1.0).
During one iteration, every specified file is checked to see if it has
@command{tail} checks whether process @var{p} is alive at least
every @var{number} seconds.
-@itemx --pid=@var{pid}
+@item --pid=@var{pid}
@opindex --pid
When following by name or by descriptor, you may specify the process ID,
@var{pid}, of the sole writer of all @var{file} arguments. Then, shortly
Note that @option{--pid} cannot be supported on some systems; @command{tail}
will print a warning if this is the case.
-@itemx --max-unchanged-stats=@var{n}
+@item --max-unchanged-stats=@var{n}
@opindex --max-unchanged-stats
When tailing a file by name, if there have been @var{n} (default
n=@value{DEFAULT_MAX_N_UNCHANGED_STATS_BETWEEN_OPENS}) consecutive
This option is meaningful only when polling (i.e., without inotify)
and when following by name.
-@itemx -n @var{k}
+@item -n @var{k}
@itemx --lines=@var{k}
@opindex -n
@opindex --lines
@var{size} bytes are broken into multiple files.
@var{size} has the same format as for the @option{--bytes} option.
-@itemx --filter=@var{command}
+@item --filter=@var{command}
@opindex --filter
With this option, rather than simply writing to each output file,
write through a pipe to the specified shell @var{command} for each output file.
auto suffix length expansion described above, and so you may also
want to specify @option{-a} to allow suffixes beyond @samp{99}.
-@itemx --additional-suffix=@var{suffix}
+@item --additional-suffix=@var{suffix}
@opindex --additional-suffix
Append an additional @var{suffix} to output file names. @var{suffix}
must not contain slash.
Immediately copy input to output in @option{--number r/...} mode,
which is a much slower mode of operation.
-@itemx --verbose
+@item --verbose
@opindex --verbose
Write a diagnostic just before each output file is opened.
Print only the maximum line lengths.
@macro filesZeroFromOption{cmd,withTotalOption,subListOutput}
-@itemx --files0-from=@var{file}
+@item --files0-from=@var{file}
@opindex --files0-from=@var{file}
@c This is commented out to avoid a texi2dvi failure.
@c texi2dvi (GNU Texinfo 4.11) 1.104
line is found, @command{md5sum} exits with nonzero status. Otherwise,
it exits successfully.
-@itemx --quiet
+@item --quiet
@opindex --quiet
@cindex verifying MD5 checksums
This option is useful only when verifying checksums.
default one-line-per-file format. If there is any checksum mismatch,
print a warning summarizing the failures to standard error.
-@itemx --status
+@item --status
@opindex --status
@cindex verifying MD5 checksums
This option is useful only when verifying checksums.
This option is useful only if all but a few lines in the checked input
are valid.
-@itemx --strict
+@item --strict
@opindex --strict
@cindex verifying MD5 checksums
When verifying checksums,
If a command line argument specifies a symbolic link, show information
for the file the link references rather than for the link itself.
-@itemx --dereference-command-line-symlink-to-dir
+@item --dereference-command-line-symlink-to-dir
@opindex --dereference-command-line-symlink-to-dir
@cindex symbolic links, dereferencing
Do not dereference symbolic links, with one exception:
but ignore any failure to do that and print no corresponding diagnostic.
Equivalent to @option{-dR --preserve=all} with the reduced diagnostics.
-@itemx --attributes-only
+@item --attributes-only
@opindex --attributes-only
Copy only the specified attributes of the source file to the destination.
If the destination already exists, do not alter its contents.
of one or more of the following strings:
@table @samp
-@itemx mode
+@item mode
Preserve the file mode bits and access control lists.
-@itemx ownership
+@item ownership
Preserve the owner and group. On most modern systems,
only users with appropriate privileges may change the owner of a file,
and ordinary users
may preserve the group ownership of a file only if they happen to be
a member of the desired group.
-@itemx timestamps
+@item timestamps
Preserve the times of last access and last modification, when possible.
On older systems, it is not possible to preserve these attributes
when the affected file is a symbolic link.
However, many systems now provide the @code{utimensat} function,
which makes it possible even for symbolic links.
-@itemx links
+@item links
Preserve in the destination files
any links between corresponding source files.
Note that with @option{-L} or @option{-H}, this option can convert
74163295 b
@end smallexample
-@itemx context
+@item context
Preserve SELinux security context of the file, or fail with full diagnostics.
-@itemx xattr
+@item xattr
Preserve extended attributes of the file, or fail with full diagnostics.
If @command{cp} is built without xattr support, ignore this option.
If SELinux context, ACLs or Capabilities are implemented using xattrs,
they are preserved by this option as well.
-@itemx all
+@item all
Preserve all file attributes.
Equivalent to specifying all of the above, but with the difference
that failure to preserve SELinux security context or extended attributes
umask and minus the set-user-ID and set-group-ID bits.
@xref{File permissions}.
-@itemx @w{@kbd{--no-preserve}=@var{attribute_list}}
+@item @w{@kbd{--no-preserve}=@var{attribute_list}}
@cindex file information, preserving
Do not preserve the specified attributes. The @var{attribute_list}
has the same form as for @option{--preserve}.
-@itemx --parents
+@item --parents
@opindex --parents
@cindex parent directories and @command{cp}
Form the name of each destination file by appending to the target
@cindex stripping symbol table information
Strip the symbol tables from installed binary executables.
-@itemx --strip-program=@var{program}
+@item --strip-program=@var{program}
@opindex --strip-program
@cindex symbol table information, stripping, program
Program used to strip binaries.
previous @option{--force} (@option{-f}) option. Equivalent to
@option{--interactive=once}.
-@itemx --interactive [=@var{when}]
+@item --interactive [=@var{when}]
@opindex --interactive
Specify when to issue an interactive prompt. @var{when} may be
omitted, or one of:
@option{--interactive} with no @var{when} is equivalent to
@option{--interactive=always}.
-@itemx --one-file-system
+@item --one-file-system
@opindex --one-file-system
@cindex one file system, restricting @command{rm} to
When removing a hierarchy recursively, skip any directory that is on a
Of course, this will not save your @file{/home} if it and your
chroot happen to be on the same file system.
-@itemx --preserve-root
+@item --preserve-root
@opindex --preserve-root
@cindex root directory, disallow recursive destruction
Fail upon any attempt to remove the root directory, @file{/},
This is the default behavior.
@xref{Treating / specially}.
-@itemx --no-preserve-root
+@item --no-preserve-root
@opindex --no-preserve-root
@cindex root directory, allow recursive destruction
Do not treat @file{/} specially when removing recursively.
These commands change file attributes.
@menu
+* chown invocation:: Change file owners and groups.
* chgrp invocation:: Change file groups.
* chmod invocation:: Change access permissions.
-* chown invocation:: Change file owners and groups.
* touch invocation:: Change file timestamps.
@end menu
Do not print error messages about files whose ownership cannot be
changed.
-@itemx @w{@kbd{--from}=@var{old-owner}}
+@item @w{@kbd{--from}=@var{old-owner}}
@opindex --from
@cindex symbolic links, changing owner
Change a @var{file}'s ownership only if it has current attributes specified
By default, no diagnostic is issued for symbolic links encountered
during a recursive traversal, but see @option{--verbose}.
-@itemx --preserve-root
+@item --preserve-root
@opindex --preserve-root
@cindex root directory, disallow recursive modification
Fail upon any attempt to recursively change the root directory, @file{/}.
Without @option{--recursive}, this option has no effect.
@xref{Treating / specially}.
-@itemx --no-preserve-root
+@item --no-preserve-root
@opindex --no-preserve-root
@cindex root directory, allow recursive modification
Cancel the effect of any preceding @option{--preserve-root} option.
By default, no diagnostic is issued for symbolic links encountered
during a recursive traversal, but see @option{--verbose}.
-@itemx --preserve-root
+@item --preserve-root
@opindex --preserve-root
@cindex root directory, disallow recursive modification
Fail upon any attempt to recursively change the root directory, @file{/}.
Without @option{--recursive}, this option has no effect.
@xref{Treating / specially}.
-@itemx --no-preserve-root
+@item --no-preserve-root
@opindex --no-preserve-root
@cindex root directory, allow recursive modification
Cancel the effect of any preceding @option{--preserve-root} option.
Do not print error messages about files whose permissions cannot be
changed.
-@itemx --preserve-root
+@item --preserve-root
@opindex --preserve-root
@cindex root directory, disallow recursive modification
Fail upon any attempt to recursively change the root directory, @file{/}.
Without @option{--recursive}, this option has no effect.
@xref{Treating / specially}.
-@itemx --no-preserve-root
+@item --no-preserve-root
@opindex --no-preserve-root
@cindex root directory, allow recursive modification
Cancel the effect of any preceding @option{--preserve-root} option.
Scale sizes by @var{size} before printing them (@pxref{Block size}).
For example, @option{-BG} prints sizes in units of 1,073,741,824 bytes.
-@itemx --total
+@item --total
@opindex --total
@cindex grand total of disk size, usage and available space
Print a grand total of all arguments after all arguments have
@opindex --all
Show counts for all files, not just directories.
-@itemx --apparent-size
+@item --apparent-size
@opindex --apparent-size
Print apparent sizes, rather than disk usage. The apparent size of a
file is the number of bytes reported by @code{wc -c} on regular files,
@var{d}, is merely the @code{stat.st_size}-derived size of the directory
entry, @var{d}.
-@itemx --time
+@item --time
@opindex --time
@cindex last modified dates, displaying in @command{du}
Show time of the most recent modification of any file in the directory,
or any of its subdirectories.
-@itemx --time=ctime
+@item --time=ctime
@itemx --time=status
@itemx --time=use
@opindex --time
Show the most recent status change time (the @samp{ctime} in the inode) of
any file in the directory, instead of the modification time.
-@itemx --time=atime
+@item --time=atime
@itemx --time=access
@opindex --time
@opindex atime@r{, show the most recent}
2057:2
@end example
-@itemx --printf=@var{format}
+@item --printf=@var{format}
@opindex --printf=@var{format}
@cindex output format
Use @var{format} rather than the default format.
@opindex --zero
Separate output items with @sc{nul} characters.
-@itemx --relative-to=@var{file}
+@item --relative-to=@var{file}
@opindex --relative-to
@cindex relpath
Print the resolved file names relative to the specified file.
Note this option honors the @option{-m} and @option{-e} options
pertaining to file existence.
-@itemx --relative-base=@var{base}
+@item --relative-base=@var{base}
@opindex --relative-base
This option is valid when used with @option{--relative-to}, and will restrict
the output of @option{--relative-to} so that relative names are output,
List only the entries that correspond to processes via which the
system is waiting for a user to login. The user name is always @samp{LOGIN}.
-@itemx --lookup
+@item --lookup
@opindex --lookup
Attempt to canonicalize hostnames found in utmp through a DNS lookup. This
is not the default because it can cause significant delays on systems with
@opindex --time
Print last system clock change.
-@itemx -u
+@item -u
@opindex -u
@cindex idle time
After the login time, print the number of hours and minutes that the
@table @samp
-@itemx --userspec=@var{user}[:@var{group}]
+@item --userspec=@var{user}[:@var{group}]
@opindex --userspec
By default, @var{command} is run with the same credentials
as the invoking process.
Use this option to run it as a different @var{user} and/or with a
different primary @var{group}.
-@itemx --groups=@var{groups}
+@item --groups=@var{groups}
@opindex --groups
Use this option to specify the supplementary @var{groups} to be
used by the new process.
Options must precede operands.
@table @samp
-@itemx --foreground
+@item --foreground
@opindex --foreground
Don't create a separate background program group, so that
the managed @var{command} can use the foreground TTY normally.
projects / platform / upstream / coreutils.git / commitdiff