CHOWN(8) OpenBSD System Manager's Manual CHOWN(8)
chown - change file owner and group
chown [-h] [-R [-H | -L | -P]] owner[:group] file ...
chown [-h] [-R [-H | -L | -P]] :group file ...
chown sets the user ID and/or the group ID of the specified files.
The options are as follows:
-H If the -R option is specified, symbolic links on the command line
are followed. (Symbolic links encountered in the tree traversal
are not followed.)
-h Change the user ID and/or the group ID on symbolic links. The -R
and -h options are mutually exclusive.
-L If the -R option is specified, all symbolic links are followed.
-P If the -R option is specified, no symbolic links are followed.
-R Change the user ID and/or the group ID for the file hierarchies
rooted in the files instead of just the files themselves.
The -H, -L, and -P options are ignored unless the -R option is specified.
In addition, these options override each other and the command's actions
are determined by the last one specified.
The owner and group operands are both optional; however, one must be
specified. If the group operand is specified, it must be preceded by a
colon (`:') character.
The owner may be either a numeric user ID or a user name. If a user name
is also a numeric user ID, the operand is used as a user name. The group
may be either a numeric group ID or a group name. If a group name is
also a numeric group ID, the operand is used as a group name.
By default, chown clears the set-user-ID and set-group-ID bits on the
file to prevent accidental or mischievous creation of set-user-ID and
set-group-ID programs. This behaviour can be overridden by setting the
sysctl(8) variable fs.posix.setuid to zero.
Only the superuser is permitted to change the owner of a file.
The chown utility exits 0 on success, and >0 if an error occurs.
chgrp(1), find(1), chown(2), fts(3), symlink(7)
The chown utility is compliant with the IEEE Std 1003.1-2008
Previous versions of the chown utility used the dot (`.') character to
distinguish the group name. This has been changed to be a colon (`:')
character so that user and group names may contain the dot character.
OpenBSD 5.4 March 9, 2011 OpenBSD 5.4
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