CHGRP(1)CHGRP(1)NAMEchgrp - change file group ownership
SYNOPSISchgrp [-fhR] group file...
chgrp-s [-fhR] groupsid file...
chgrp-R [f] [-H | -L | -P] group file...
chgrp-s -R [f] [-H | -L | -P] groupsid file...
DESCRIPTION
The chgrp utility will set the group ID of the file named by each file
operand to the group ID specified by the group operand.
For each file operand, it will perform actions equivalent to the
chown(2) function, called with the following arguments:
o The file operand will be used as the path argument.
o The user ID of the file will be used as the owner argument.
o The specified group ID will be used as the group argument.
Unless chgrp is invoked by a process with appropriate privileges, the
set-user-ID and set-group-ID bits of a regular file will be cleared
upon successful completion; the set-user-ID and set-group-ID bits of
other file types may be cleared.
The operating system has a configuration option
_POSIX_CHOWN_RESTRICTED, to restrict ownership changes. When this
option is in effect, the owner of the file may change the group of the
file only to a group to which the owner belongs. Only the super-user
can arbitrarily change owner IDs, whether or not this option is in
effect. To set this configuration option, include the following line in
/etc/system:
set rstchown = 1
To disable this option, include the following line in /etc/system:
set rstchown = 0
_POSIX_CHOWN_RESTRICTED is enabled by default. See system(4) and fpath‐
conf(2).
OPTIONS
The following options are supported.
/usr/bin/chgrp and /usr/xpg4/bin/chgrp
-f
Force. Does not report errors.
-h
If the file is a symbolic link, this option changes the group of
the symbolic link. Without this option, the group of the file
referenced by the symbolic link is changed.
-H
If the file specified on the command line is a symbolic link ref‐
erencing a file of type directory, this option changes the group
of the directory referenced by the symbolic link and all the
files in the file hierarchy below it. If a symbolic link is
encountered when traversing a file hierarchy, the group of the
target file is changed, but no recursion takes place.
-L
If the file is a symbolic link, this option changes the group of
the file referenced by the symbolic link. If the file specified
on the command line, or encountered during the traversal of the
file hierarchy, is a symbolic link referencing a file of type
directory, then this option changes the group of the directory
referenced by the symbolic link and all files in the file hierar‐
chy below it.
-P
If the file specified on the command line or encountered during
the traversal of a file hierarchy is a symbolic link, this option
changes the group of the symbolic link. This option does not fol‐
low the symbolic link to any other part of the file hierarchy.
-s
The specified group is Windows SID. This option requires a file
system that supports storing SIDs, such as ZFS.
Specifying more than one of the mutually-exclusive options -H, -L, or
-P is not considered an error. The last option specified determines the
behavior of chgrp.
/usr/bin/chgrp
-R
Recursive. chgrp descends through the directory, and any subdi‐
rectories, setting the specified group ID as it proceeds. When a
symbolic link is encountered, the group of the target file is
changed, unless the -h or -P option is specified. However, no
recursion takes place, unless the -H or -L option is specified.
/usr/xpg4/bin/chgrp
-R
Recursive. chgrp descends through the directory, and any subdi‐
rectories, setting the specified group ID as it proceeds. When a
symbolic link is encountered, the group of the target file is
changed, unless the -h or -P option is specified. Unless the -H,
-L, or -P option is specified, the -L option is used as the
default mode.
OPERANDS
The following operands are supported:
group
A group name from the group database or a numeric group ID.
Either specifies a group ID to be given to each file named by
one of the file operands. If a numeric group operand exists in
the group database as a group name, the group ID number asso‐
ciated with that group name is used as the group ID.
file
A path name of a file whose group ID is to be modified.
USAGE
See largefile(5) for the description of the behavior of chgrp when
encountering files greater than or equal to 2 Gbyte (2^31 bytes).
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables
that affect the execution of chgrp: LANG, LC_ALL, LC_CTYPE, LC_MES‐
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0
The utility executed successfully and all requested changes were
made.
>0
An error occurred.
FILES
/etc/group
group file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
/usr/bin/chgrp
┌────────────────────┬─────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────┤
│CSI │ Enabled. See NOTES. │
├────────────────────┼─────────────────────┤
│Interface Stability │ Committed │
├────────────────────┼─────────────────────┤
│Standard │ See standards(5). │
└────────────────────┴─────────────────────┘
/usr/xpg4/bin/chgrp
┌────────────────────┬─────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────────┤
│CSI │ Enabled. See NOTES. │
├────────────────────┼─────────────────────┤
│Interface Stability │ Committed │
├────────────────────┼─────────────────────┤
│Standard │ See standards(5). │
└────────────────────┴─────────────────────┘
SEE ALSOchmod(1), chown(1), id(1M), chown(2), fpathconf(2), group(4),
passwd(4), system(4), attributes(5), environ(5), largefile(5), stan‐
dards(5)NOTESchgrp is CSI-enabled except for the group name.
Jul 11, 2008 CHGRP(1)