Does an installer alter the #! path on a script?

boftx has asked for the wisdom of the Perl Monks concerning the following question:

I don't usually put a script in a package, so I'm not sure how the installer handles this. Typically, one would see the following in a perl script:

#!/usr/local/bin/perl
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But suppose the perl executable is located somewhere else? How does one tell the installer (cpanm, CPAN, etc.) to change the #! path in the script? (I am presuming that script in a distro's bin dir will be installed in an appropriate location in the installing user's PATH.)

It helps to remember that the primary goal is to drain the swamp even when you are hip-deep in alligators.

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Re: Does an installer alter the #! path on a script? by davido (Cardinal) on Nov 25, 2013 at 01:04 UTC
For a module/script author to accomplish this you design your `makefile` properly. To read up on the topic, open the POD for ExtUtils::MakeMaker in your browser. Search the text for `#!`. It's covered there: EXE_FILES Ref to array of executable files. The files will be copied to the INST_SCRIPT directory. Make realclean will delete them from there again. If your executables start with something like `#!perl` or `#!/usr/bin/perl` MakeMaker will change this to the path of the `perl` '`Makefile.PL`' was invoked with so the programs will be sure to run properly even if `perl` is not in `/usr/bin/perl`. Dave	[reply] [d/l] [select]
Re^2: Does an installer alter the #! path on a script? by boftx (Deacon) on Nov 25, 2013 at 01:13 UTC
Thanks. I was just about to post and update saying I had found that comment. :( It helps to remember that the primary goal is to drain the swamp even when you are hip-deep in alligators.	[reply]
Re^3: Does an installer alter the #! path on a script? (shebang) by Anonymous Monk on Nov 25, 2013 at 01:58 UTC
Thanks. I was just about to post and update saying I had found that comment. :( :)smile , now install #! and install shebang yields results :)	[reply]