Re: Diff between 'print POSIX::cuserid' and 'use POSIX; print cuserid'


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Re: Diff between 'print POSIX::cuserid' and 'use POSIX; print cuserid'

by linuxer (Curate)

on Jan 08, 2013 at 00:10 UTC ( [id://1012133]=note: print w/replies, xml )

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in reply to Diff between 'print POSIX::cuserid' and 'use POSIX; print cuserid'

In your first example, you did a use POSIX; in the second, you did not. Why?

Without loading POSIX you won't be able to call a function like POSIX::cuserid.

Enable ~~strict~~warnings and see yourself what happens:

$ perl -wE 'say POSIX::cuserid'
Name "POSIX::cuserid" used only once: possible typo at -e line 1.
say() on unopened filehandle cuserid at -e line 1.
[download]

But with loading POSIX:

$ perl -MPOSIX -wE 'say POSIX::cuserid'
linuxer
[download]

Updates

replaced strict with warnings; removed strict from code examples; the warning is the crucial part.

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Re^2: Diff between 'print POSIX::cuserid' and 'use POSIX; print cuserid' by wsanders (Novice) on Jan 08, 2013 at 21:10 UTC
Thanks, yes, so in #2 POSIX isn't loaded, so perl -e 'print POSIX::cuserid' should return nothing, actually. That's the answer. There is something odd about this user's environment that is causing it to print his username. In my environment, and root's, it behaves the way it is supposed to. Not going to investigate further.	[reply]

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