Set include path

jayto has asked for the wisdom of the Perl Monks concerning the following question:

So I have a folder called patchManagement. In that folder I have a lib folder. I want to run a perl file from the patchManagement folder that uses the modules in the lib folder, I tried using use lib '/lib' and use lib '$FindBin::Bin/lib' I am obviously doing this wrong, how should I be doing it?

Here are my errors incase they help.

Can't locate ID/PatchAssembly/ICSCERT.pm in @INC (@INC contains: /usr/
+local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /us
+r/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 .) at test.
+pl line 4.
BEGIN failed--compilation aborted at test.pl line 4.
[download]

the ID folder is inside the lib folder

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Re: Set include path by moritz (Cardinal) on Aug 06, 2012 at 13:42 UTC
`use lib '$FindBin::Bin/lib'` Use double quotes, not single quotes. Perl 6 - the future is here, just unevenly distributed	[reply] [d/l]
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Re: Set include path by MidLifeXis (Monsignor) on Aug 06, 2012 at 13:35 UTC
See lib and @INC. --MidLifeXis	[reply]
Re^2: Set include path by jayto (Acolyte) on Aug 06, 2012 at 13:41 UTC
Those docs are what I followed to get my above attempts.	[reply]
Re^3: Set include path by MidLifeXis (Monsignor) on Aug 06, 2012 at 13:52 UTC
The first: `use lib '/lib'` will attempt to find your library file in the root of the current drive. If you mean that it should look in the lib directory under the current directory, then `use lib 'lib'` would be appropriate, although potentially risky ¹. moritz has addressed the usage issue with your other attempt. 1 - Given that any attacker could probably copy your script anyway, I am having a hard time adding any additional risk by a user being able to replace your library with one that they 'own', therefore the use of 'potentially'. --MidLifeXis	[reply] [d/l] [select]
Re^3: Set include path by blue_cowdawg (Monsignor) on Aug 06, 2012 at 15:59 UTC
Those docs are what I followed to get my above attempts. OK: show us your code then. In the last 24 years I've used various flavors of `use lib ..` and `push @INC,"..."` with success. The only time either hasn't worked for me is when I fat fingered something (like a path). Peter L. Berghold -- Unix Professional Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg	[reply] [d/l] [select]
Re: Set include path by Anonymous Monk on Aug 06, 2012 at 20:08 UTC
The `use lib` statement is effectively executable, not a declaration, therefore it should be put first.	[reply]