|on Aug 24, 1999 at 22:43 UTC||Need Help??|
See the current Perl documentation for getgrgid.
Here is our local, out-dated (pre-5.6) version:
getgrgid - get group record given group user ID
These routines perform the same functions as their counterparts in the system library. In list context, the return values from the various get routines are as follows:
($name,$passwd,$uid,$gid, $quota,$comment,$gcos,$dir,$shell,$expire) = getpw* ($name,$passwd,$gid,$members) = getgr* ($name,$aliases,$addrtype,$length,@addrs) = gethost* ($name,$aliases,$addrtype,$net) = getnet* ($name,$aliases,$proto) = getproto* ($name,$aliases,$port,$proto) = getserv*
(If the entry doesn't exist you get a null list.)
In scalar context, you get the name, unless the function was a lookup by name, in which case you get the other thing, whatever it is. (If the entry doesn't exist you get the undefined value.) For example:
$uid = getpwnam($name); $name = getpwuid($num); $name = getpwent(); $gid = getgrnam($name); $name = getgrgid($num; $name = getgrent(); #etc.
In getpw*() the fields
For the gethost*() functions, if the
($a,$b,$c,$d) = unpack('C4',$addr);
If you get tired of remembering which element of the return list contains
which return value, by-name interfaces are also provided in modules:
use File::stat; use User::pwent; $is_his = (stat($filename)->uid == pwent($whoever)->uid);
Even though it looks like they're the same method calls (uid), they aren't,