>From perldoc perlvar:
$REAL_USER_ID
$UID
$< The real uid of this process. (Mnemonic: it's the uid you came
from, if you're running setuid.) You can change both the real
uid and the effective uid at the same time by using
POSIX::setuid(). Since changes to $< require a system call,
check $! after a change attempt to detect any possible errors.
$EFFECTIVE_USER_ID
$EUID
$> The effective uid of this process. Example:
$< = $>; # set real to effective uid
($<,$>) = ($>,$<); # swap real and effective uid
You can change both the effective uid and the real uid at the
same time by using POSIX::setuid(). Changes to $> require a
check to $! to detect any possible errors after an attempted
change.
(Mnemonic: it's the uid you went to, if you're running setuid.)
$< and $> can be swapped only on machines supporting
setreuid().
Then you can use getpwuid() to look up the username if you like...
.b
cheers,
ben
On Thu, Sep 21, 2006 at 11:30:08AM -0400, Alex Brelsfoard wrote:
> I know I've done this before, but I'm having a hard time finding my old
> code, and am not using the right search terms on google...
> All I am looking for is the quickest method to find the user who is calling
> this script.
> This is a script that will only ever be run by shell command on a Linux
> system.
>
> Can anyone help me?
>
> Thanks.
>
> --Alex
>
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--
Benjamin Kram
[EMAIL PROTECTED]
617.998.8592
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