getting users IDs list

[merlyn at stonehenge.com (Randal L. Schwartz)]

>>>>> "??????" == ?????? ?????? <vctr.br@xxxxxxx> writes:

??????> Hi
??????> Maybe this question is little stupid, but how can I get a list of users/groups IDs available on my system?

$ perl -le 'print $a[0] while @a = getpwent' # user names
$ perl -le 'print $a[0] while @a = getgrent' # group names

Or, you can write an equivalent C program, but why? :)

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