chgrp - change file group ownership
chgrp [-fhR] group file...
The chgrp utility will set the group ID of the file named by
each file operand to the group ID specified by the group
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
o The specified group ID will be used as the group argu-
Unless chgrp is invoked by a process with appropriate
privileges, the set-user-ID and set-group-ID bits of a regu-
lar file will be cleared upon successful completion; the
set-user-ID and set-group-ID bits of other file types may be
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
set rstchown = 1
To disable this option, include the following line in
set rstchown = 0
_POSIX_CHOWN_RESTRICTED is enabled by default. See system(4)
The following options are supported:
-f Force. Do not report errors.
-h If the file is a symbolic link, change the group of
the symbolic link. Without this option, the group of
the file referenced by the symbolic link is changed.
-R Recursive. chgrp descends through the directory, and
any subdirectories, 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
option is specified), but no recursion takes place.
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 associated with that
group name is used as the group ID.
file A path name of a file whose group ID is to be modi-
See largefile(5) for the description of the behavior of
chgrp when encountering files greater than or equal to 2
Gbyte (2**31 bytes).
See environ(5) for descriptions of the following environment
variables that affect the execution of chgrp: LANG, LC_ALL,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
The following exit values are returned:
0 The utility executed successfully and all requested
changes were made.
>0 An error occurred.
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWcsu |
| CSI | Enabled (see NOTES) |
| Interface Stability | Standard |
chmod(1), chown(1), id(1M), chown(2), fpathconf(2),
group(4), passwd(4), system(4), attributes(5), environ(5),
chgrp is CSI-enabled except for the group name.
Man(1) output converted with