Question

This only checks PATH variable?

Can I “override” path by using say PERL=/usr/somelocal/perl

Thanks

Answer 1

Three ways to use a different Perl binary:

1. Set the PATH environment variable before executing the script; e.g. PATH=/opt/alternative-perl/bin:$PATH /path/to/your/script.pl
2. Execute the Perl binary to use directly and use the script name as its argument: /opt/alternative-perl/bin/perl /path/to/your/script.pl
3. If your $PATH contains a directory before the one the “bad” Perl binary is located in then you could place a symbolic link to the “good” Perl binary in such a directory. However, this is messy and only applicable in certain situations, but it is a more permanent solution than the first two.

And if you do have write access to that script and you’re willing to modify it then @krishnang’s reply applies: modify the first line to point to the binary to use, e.g. #!/opt/alternative-perl/bin/perl.