Note: I didn't write this post to start a flame war or to discredit anyone. What i like to see is some active discussion on the topic
On most of my (linux) systems, i usually have at least two perl binaries installed:
- Whatever comes with the linux distribution, usually at /usr/bin/perl
- The one that i use. That's the one a call to "perl" starts in *my* user account
In the past - when using the OS supplied perl - i had some major troubles. Mostly, these where incompatibilities after the distributor rolled out some updates or when i upgraded some modules to newer (test) versions. Also, now i use ActiveState Perl for much of my software development.
The trouble is: While the distribution-supplied scripts correctly call /usr/bin/perl, most of the code that i download from the interwebs does so too - and start breaking because of "missing" modules
The thing that worked for me best is to change all Perl scripts on my system to use
as the hashbang line. Whenever the systems automatically start a Perl script, it uses the dristribution-maintained perl, whenever i start a script with my user account, it uses the perl installed in my home directory.
In my opinion, in a time where there are more and more different plattforms, assuming perl is at a fixed path and that perl binary is the correct one to use isn't very helpfull. It's similar to the still widely spread believe that /bin/sh is bash (or csh or whatever)...
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