[erlang-questions] where is os:getuid() ?

Jesper Louis Andersen jesper.louis.andersen@REDACTED
Mon Nov 23 20:09:54 CET 2015

On Mon, Nov 23, 2015 at 7:02 PM, derek <denc716@REDACTED> wrote:

> wonder how many other POSIX system calls are not implemented in erlang
> standard library

Many! Most calls implemented is there due to a need by someone. This is why
some of the system calls, however likely to be used, has not yet been
implemented. Erlang doesn't in general provide a POSIX interface to the
underlying Operating System, and many parts doesn't map well into the
Erlang model.

All hope is not lost however, since

list_to_integer(string:strip(os:cmd("id -u"), right, $\n)).

solves your problem. Granted, it performs worse than asking for the uid
directly, but I've rarely seen a program who needed to manipulate uids
otherwise, written in Erlang. May I ask what you are trying to do?

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