in reply to migrate perl program

It depends. RHEL3 is from 2003, so it probably features 5.8.0 or the like. RHEL7 is current (perl 5.16?), which means a lots of deltas to study.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

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Re^2: migrate perl program
by McA (Priest) on Dec 02, 2014 at 15:20 UTC

    Hi choroba,

    do you really think the Perl changes matter? Assuming it's Perl 5.8 than it means that newer features are never used and shouldn't be a problem.

    In my opinion there are two main fields:

    • Bugfixes which cause different behaviour in old code.
    • Changes and bugfixes in used modules. My first anaysis would try to collect all used modules.

    McA

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      There might be some deprecations, too. I had to remove many defined %hash even from 5.8.6 code.

      But you're right, modules might be a bigger problem, especially if they're XS but not maintained anymore.

      لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
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[d/l]
Re^2: migrate perl program
by hippo (Archbishop) on Dec 02, 2014 at 15:57 UTC

    If those version numbers were guesses, they are very good ones! According to DistroWatch the perl versions packaged with RHEL3 and RHEL7 are 5.8.0 and 5.16.3 respectively.

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