Re^3: How should I manage CPAN when using two versions of Perl in my computer?

use of perlbrew, requires to set an env-var and use #!/usr/bin/env perl as the shebang of all your perl scripts.

I love perlbrew but I love the shebang more. I could not look at env at the top of every perl script let alone type it. Shebang is holy and I found an easy way to preserve it to an acceptable degree and gained a very handy perlbrew switch. Like many others I have an untouched system perl and a main perlbrew with tons of cpan modules. My shebang preservation and toggle switch between system perl and perlbrew perl is achieved by making a symlink in the root directory called "user" that points to the main perlbrew path:


cd /
sudo ln -s /path/to/perl5/perlbrew/perls/perl-VERSION user

The main perlbrew path is found by typing "which perl" while brewing the main perlbrew perl and ignoring the /bin/perl part at the end. Now there are two shebangs with a single character switch that works everywhere:


#!/usr/bin/perl  # system perl
#!/user/bin/perl # perlbrew perl

On my system:


/usr/bin/perl -le 'print $^V'
v5.18.2

/user/bin/perl -le 'print $^V'
v5.26.2

This symlink has made me very happy! ☺

_{STOP REINVENTING WHEELS, START BUILDING SPACE ROCKETS!—CPAN} 🐪

Comment on Re^3: How should I manage CPAN when using two versions of Perl in my computer?

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Re^4: How should I manage CPAN when using two versions of Perl in my computer? by bliako (Abbot) on Jul 01, 2018 at 09:59 UTC
Thinking about it you can do this: `% sudo ln -s /path/to/perl5/perlbrew/perls/perl-VERSION use$'\x010'r % echo /* /usr /usr` [download] It introduces a backspace in the filename of 'user' just after 'e'. but don't try it at home ... neither at work	[reply] [d/l]
Re^5: How should I manage CPAN when using two versions of Perl in my computer? by soonix (Chancellor) on Jul 01, 2018 at 13:35 UTC
Getting rid of that symlink left as an exercise for the reader ...	[reply]
Re^6: How should I manage CPAN when using two versions of Perl in my computer? by bliako (Abbot) on Jul 02, 2018 at 09:42 UTC
!	[reply]
Re^4: How should I manage CPAN when using two versions of Perl in my computer? by bliako (Abbot) on Jul 01, 2018 at 09:35 UTC
neat	[reply]