12-07-2009
Hi.
This is from the chown manpage (AIX, but the same holds true for any system - I would hope!)
Quote:
Only the root user can change the owner of a file. You can change the group of a file only if you are a root user or if you own the
file. If you own the file but are not a root user, you can change the group only to a group of which you are a member.
Hope this helps!
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LEARN ABOUT OPENSOLARIS
chown
chown(1B) SunOS/BSD Compatibility Package Commands chown(1B)
NAME
chown - change owner
SYNOPSIS
/usr/ucb/chown [-fR] owner[.group] filename...
DESCRIPTION
chown changes the owner of the filenames to owner. The owner can be either a decimal user ID (UID) or a login name found in the password
file. An optional group can also be specified. The group can be either a decimal group ID (GID) or a group name found in the GID file.
In the default case, only the super-user of the machine where the file is physically located can change the owner. The system configura-
tion option {_POSIX_CHOWN_RESTRICTED} and the privileges PRIV_FILE_CHOWN and PRIV_FILE_CHOWN_SELF also affect who can change the ownership
of a file. See chown(2) and privileges(5).
OPTIONS
The following options are supported:
-f Do not report errors.
-R Recursively descend into directories setting the ownership of all files in each directory encountered. When symbolic links are
encountered, their ownership is changed, but they are not traversed.
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).
FILES
/etc/passwd Password file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO
chgrp(1), chown(2), group(4), passwd(4), attributes(5), largefile(5), privileges(5)
SunOS 5.11 21 Jun 2004 chown(1B)