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User Commands chown(1)
NAME
chown - change file ownership
SYNOPSIS
chown [-fhR] owner[:group] file...
chown -R [-f] [-H | -L | -P] owner[:group] file...
DESCRIPTION
The chown utility sets the user ID of the file named by each
file to the user ID specified by owner, and, optionally,
sets the group ID to that specified by group.
If chown is invoked by other than the super-user, the set-
user-ID bit is cleared.
Only the owner of a file (or the super-user) can change the
owner of that file.
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 is
prevented from changing the owner ID of the file. 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 sys-
tem(4) and fpathconf(2).
OPTIONS
/usr/bin/chown and /usr/xpg4/bin/chown
The following options are supported:
-f Force. Does not report errors.
-h If the file is a symbolic link, this option changes
the owner of the symbolic link. Without this
option, the owner of the file referenced by the
symbolic link is changed.
SunOS 5.10 Last change: 21 Jun 2004 1
User Commands chown(1)
-H If the file specified on the command line is a sym-
bolic link referencing a file of type directory,
this option changes the owner 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 owner of the target file is changed, but no
recursion takes place.
-L If the file is a symbolic link, this option changes
the owner 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 owner
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
owner 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 chown.
/usr/bin/chown
The following options are supported:
-R Recursive. chown descends through the directory,
and any subdirectories, setting the specified own-
ership ID as it proceeds. When a symbolic link is
encountered, the owner 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/chown
The following options are supported:
SunOS 5.10 Last change: 21 Jun 2004 2
User Commands chown(1)
-R Recursive. chown descends through the directory,
and any subdirectories, setting the specified own-
ership ID as it proceeds. When a symbolic link is
encountered, the owner 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:
owner[:group] A user ID and optional group ID to
be assigned to file. The owner por-
tion of this operand must be a user
name from the user database or a
numeric user ID. Either specifies a
user ID to be given to each file
named by file. If a numeric owner
exists in the user database as a
user name, the user ID number asso-
ciated with that user name is used
as the user ID. Similarly, if the
group portion of this operand is
present, it must be a group name
from the group database or a numeric
group ID. Either specifies a group
ID to be given to each file. 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 user ID
is to be modified.
USAGE
See largefile(5) for the description of the behavior of
chown when encountering files greater than or equal to 2
Gbyte ( 2**31 bytes).
EXAMPLES
Example 1: Changing Ownership of All Files in the Hierarchy
The following command changes ownership of all files in the
hierarchy, including symbolic links, but not the targets of
the links:
SunOS 5.10 Last change: 21 Jun 2004 3
User Commands chown(1)
example% chown -R -h owner[:group] file...
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment
variables that affect the execution of chown: 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/passwd System password file
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
/usr/bin/chown
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
| CSI | Enabled. See NOTES. |
|_____________________________|_____________________________|
| Interface Stability | Standard |
|_____________________________|_____________________________|
/usr/xpg4/bin/chown
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWxcu4 |
|_____________________________|_____________________________|
| CSI | Enabled. See NOTES. |
|_____________________________|_____________________________|
| Interface Stability | Standard |
|_____________________________|_____________________________|
SunOS 5.10 Last change: 21 Jun 2004 4
User Commands chown(1)
SEE ALSO
chgrp(1), chmod(1), chown(2), fpathconf(2), passwd(4), sys-
tem(4), attributes(5), environ(5), largefile(5), stan-
dards(5)
NOTES
chown is CSI-enabled except for the owner and group names.
SunOS 5.10 Last change: 21 Jun 2004 5
Man(1) output converted with
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This page was generated on Wed Sep 12 11:24:29 GMT 2007
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