how to get which user is on

white-fox has asked for the wisdom of the Perl Monks concerning the following question:

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Re: how to get which user is on by RazorbladeBidet (Friar) on Mar 28, 2005 at 19:13 UTC
See also getpwuid, getlogin, and fork -------------- "But what of all those sweet words you spoke in private?" "Oh that's just what we call pillow talk, baby, that's all."	[reply]
Re: how to get which user is on by ambs (Pilgrim) on Mar 28, 2005 at 19:09 UTC
Some answers to some of your questions: `$>` is your real user id `$ENV{HOME}` is your home, if you are in a nix like system Alberto Simões*	[reply]
Re^2: how to get which user is on by Fletch (Bishop) on Mar 28, 2005 at 21:14 UTC
`$ENV{HOME}` is likely to be the home directory of the current user, but don't count on it. Things such as `su`, `sudo`, and `cron` can commonly either leave it pointing at the wrong place or completely unset). Use the value from `getpwuid` to be certain.</pedant>	[reply] [d/l] [select]
Re: how to get which user is on by cog (Parson) on Mar 28, 2005 at 19:16 UTC
Exactly what do you mean by "PID of any program"? The PID of the current process if given by special var $$ ... but I'm not sure that's what you want...	[reply]