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NAME
chgrp - change file group ownership
SYNOPSIS
chgrp [-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:
o The file operand will be used as the path argument.
o The user ID of the file will be used as the owner argu-
ment.
o The specified group ID will be used as the group argu-
ment.
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
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 fpathconf(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 sym-
bolic 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 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 hierarchy below it.
-P If the file specified on the command line or
encountered during the traversal of a file hierar-
chy 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 subdirectories, setting the specified group
ID as it proceeds. When a symbolic link is encoun-
tered, 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 subdirectories, setting the specified group
ID as it proceeds. When a symbolic link is encoun-
tered, 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 data-
base as a group name, the group ID number associ-
ated with that group name is used as the group ID.
file A path name of a file whose group ID is to be modi-
fied.
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_MESSAGES, 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 attri-
butes:
/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 ALSO
chmod(1), chown(1), id(1M), chown(2), fpathconf(2),
group(4), passwd(4), system(4), attributes(5), environ(5),
largefile(5), standards(5)
NOTES
chgrp is CSI-enabled except for the group name.