chgrp(1) User Commands chgrp(1)NAMEchgrp - change file group ownership
SYNOPSISchgrp [-fhR] group file...
chgrp-R [f] [-H | -L | -P] group 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:
· The file operand will be used as the path argument.
· The user ID of the file will be used as the owner argument.
· 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
referencing 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 spec‐
ified 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 hierarchy below it.
-P If the file specified on the command line or encountered dur‐
ing the traversal of a file hierarchy is a symbolic link, this
option changes the group of the symbolic link. This option
does not follow the symbolic link to any other part of the
file hierarchy.
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 sub‐
directories, 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. How‐
ever, 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 sub‐
directories, 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 │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWcsu │
├─────────────────────────────┼─────────────────────────────┤
│CSI │Enabled (see NOTES) │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
└─────────────────────────────┴─────────────────────────────┘
/usr/xpg4/bin/chgrp
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWxcu4 │
├─────────────────────────────┼─────────────────────────────┤
│CSI │Enabled (see NOTES) │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
└─────────────────────────────┴─────────────────────────────┘
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.
SunOS 5.10 25 Nov 2003 chgrp(1)
