chown
chown - change the owership on a list of files
chown LIST
Changes the owner (and group) of a list of files. The first two
elements of the list must be the NUMERICAL uid and gid, in that order.
Returns the number of files successfully changed.
<![CDATA[
$cnt = chown $uid, $gid, 'foo', 'bar';
chown $uid, $gid, @filenames;
]]>
Here's an example that looks up non-numeric uids in the passwd file:
<![CDATA[
print "User: ";
chop($user = <STDIN>);
print "Files: "
chop($pattern = <STDIN>);
($login,$pass,$uid,$gid) = getpwnam($user)
or die "$user not in passwd file";
@ary = <${pattern}>; # expand filenames
chown $uid, $gid, @ary;
]]>
On most systems, you are not allowed to change the ownership of the
file unless you're the superuser, although you should be able to change
the group to any of your secondary groups. On insecure systems, these
restrictions may be relaxed, but this is not a portable assumption.