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 🐪

In reply to Re^3: How should I manage CPAN when using two versions of Perl in my computer? by usemodperl
in thread How should I manage CPAN when using two versions of Perl in my computer? by hda

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