CHOWN (1)
change file owner and group
SYNOPSIS
chown [ options ] user [: group ] file...
POSIX options:
[-R]
GNU options (shortest form):
[-cfhvR] [--dereference]
[--reference= rfile ]
[--help] [--version] [--]
DESCRIPTION
chown
changes the user and/or group ownership of each given
file
as specified by the first non-option argument
as follows: if only a user name (or numeric user ID) is given,
that user is made the owner of each given file, and the files' group is
not changed. If the user name is followed by a colon and a group
name (or numeric group ID), with no spaces between them, the group ownership
of the files is changed as well.
GNU DETAILS
The GNU version allows a dot instead of a colon (following BSD).
[This was not allowed by POSIX since a dot is a valid character
in a user name.]
If a colon or dot but no group name follows
the user name, that user is made the owner of the files and the group of the
files is changed to that user's login group. If the colon or dot and group
are given, but the user name is omitted, only the group of the files is
changed; in this case,
chown
performs the same function as
chgrp .
POSIX OPTIONS
-R
Recursively change ownership of directories and their contents.
GNU OPTIONS
-c, --changes
Verbosely describe the action for each
file
whose ownership actually changes.
-f, --silent, --quiet
Do not print error messages about files whose ownership cannot be changed.
-h, --no-dereference
Act on symbolic links themselves instead of what they point to.
Only available if the
lchown
system call is provided.
-v, --verbose
Verbosely describe the action (or non-action) taken for every
file .
-R, --recursive
Recursively change ownership of directories and their contents.
--dereference
Change the ownership of the target of a symbolic link instead of the
symbolic link itself.
(New in file\%utils-4.0.)
--reference= rfile
(New in file\%utils 4.0.)
Change the ownership of
file
to that of
rfile .
GNU STANDARD OPTIONS
--help
Print a usage message on standard output and exit successfully.
--version
Print version information on standard output, then exit successfully.
--
ENVIRONMENT
The variables LANG, LC_ALL, LC_CTYPE and LC_MESSAGES have the
usual meaning.
CONFORMING TO
POSIX 1003.2 does not allow use of the dot as separator
between user name and group name.
NOTES
This page describes
chown
as found in the fileutils-4.0 package;
other versions may differ slightly.
Mail corrections and additions to aeb@cwi.nl.
Report bugs in the program to fileutils-bugs@gnu.ai.mit.edu.
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