chgrp(1)
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CHGRP(1) NetBSD Reference Manual CHGRP(1)
NAME
chgrp - change group
SYNOPSIS
chgrp [-R [-H | -L | -P]] [-fh] group files ...
DESCRIPTION
The chgrp utility sets the group ID of the file named by each file
operand to the group ID specified by the group operand.
Options:
-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.)
-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 group ID for the file hierarchies rooted in the files
instead of just the files themselves.
-f The force option ignores errors, except for usage errors and
doesn't query about strange modes (unless the user does not have
proper permissions).
-h If file is a symbolic link, the group of the link is changed.
If -h is not given, unless the -H or -L option is set, chgrp on a symbol-
ic link always succeeds and has no effect. 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 group operand can be either a group name from the group database, or
a numeric group ID. If a group name is also a numeric group ID, the
operand is used as a group name.
The user invoking chgrp must belong to the specified group and be the
owner of the file, or be the super-user.
Unless invoked by the super-user, chgrp clears the set-user-id and set-
group-id bits on a file to prevent accidental or mischievous creation of
set-user-id or set-group-id programs.
The chgrp utility exits 0 on success, and >0 if an error occurs.
FILES
/etc/group Group ID file
SEE ALSO
chown(2), lchown(2), fts(3), group(5), passwd(5), symlink(7), chown(8)
STANDARDS
The chgrp utility is expected to be POSIX 1003.2 compatible.
NetBSD 1.6 March 31, 1994 1
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