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Re: perl vs she-bang perl

by pvaldes (Chaplain)
on Mar 07, 2013 at 10:39 UTC ( #1022192=note: print w/replies, xml ) Need Help??

in reply to perl vs she-bang perl

In a perl script, is there anyway to determine the following:

1) Was the script started via 'perl' or '' using the she-bang line?

Is not much relevant. You could use head -1 myscript and see what is it the first line, and use ls -lh myscript to see if is executable. if both you could suspect that the script was launched as "./myscript", but the "perl myscript" form is also possible. If myscript is not executable or the shebang line is missing, you need to run this as "perl myscript"

Your answer is perhaps in bash history

2) Can I determine what options were passed to 'perl' for the former or what options were on the she-bang line for the latter?

mmh, only in bash history for the former, just looking at the shebang line for the latter. If you want to pick up this info from now on in a perl script you could put something like this in your script

print OUTFILE_LOG "Running as: ", $0," ",$ARGV[0]," ",$ARGV[1]," ",$ARGV[2]; #... etc

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marioroy Updated Re^3: RFC: Compiling Gtk+ stack on windows with strawberry perl. Also tested Gtk2 installation on Strawberry Perl v5.22.3.1. Installing Tk and Tk::Zinc works fine on Perl v5.22.3.1.
[marioroy]: Hi karlgoethebier. Folks can comment feasibly if asking the review via a meditation (imho).
[marioroy]: karlgoethebier Ah, am not sure if tiny meditation or a cool use. ;-)

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