Re: Perl thinks it's the shell!

From perlrun,

If the #! line does not contain the word ``perl'', the program named after the #! is executed instead of the Perl interpreter. This is slightly bizarre, but it helps people on machines that don't do #!, because they can tell a program that their SHELL is /usr/bin/perl, and Perl will then dispatch the program to the correct interpreter for them.

Also, I believe Apache uses the #! line rather the file association.

On a related note, (again from perlrun)

The #! line is always examined for switches as the line is being parsed. Thus, if you're on a machine that allows only one argument with the #! line, or worse, doesn't even recognize the #! line, you still can get consistent switch behavior regardless of how Perl was invoked, even if -x was used to find the beginning of the program.

so -w and other switches on the #! line will work in Windows, even though Windows doesn't know about the #! line.

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Re^2: Perl thinks it's the shell! by misterw (Acolyte) on Jun 02, 2005 at 05:23 UTC
Thanks so much. I thought I was going NUTS! In correction to my original post (since updated) it does work with callperl.exe but originally it was `!#/c/apps/pp3.exe` [download] and that didn't work , which added to my confusion(I should have noticed this when posting). Seeing this, I then actually started adding and deleting letters from the shebang line and got what seemed to be random results. `!#/c/apps/callperl.exe and !#/c/apps/callperllllll.exe` [download] worked but `!#/c/apps/callpe.exe` [download] failed I didn't happen to think that it might be to do with the word perl Thanks again for the quick response, You get good service here!!! This is the second time I have come across mysterious (yes, should have read the docs) perl (related - though not perls fault) problems on windows. At first callperl.exe kept stealing spaces from my command line arguments until I realised that you need to double quote all command line parameters containing spaces. This is important for system and exec in c which call CreateProcess on windows platforms. Matt	[reply] [d/l] [select]
Re^3: Perl thinks it's the shell! by monsieur_champs (Curate) on Jun 02, 2005 at 12:55 UTC
Fellow misterw This is a classical. :-) Just do like the emacs users do: `#!/c/apps/pp3.exe # -- perl --` This solves your problem, I guess. This solved my problems, when I was dealing with this kind'o'stuff. May the gods bless your work. -- monsieur_champs	[reply] [d/l]
Re^3: Perl thinks it's the shell! by omega_monk (Scribe) on Jun 02, 2005 at 11:39 UTC
`!#/c/apps/` [download] Just a typo, perhaps? `#!/c/apps/` [download]	[reply] [d/l] [select]
Re^4: Perl thinks it's the shell! by misterw (Acolyte) on Jun 03, 2005 at 05:32 UTC
Yes, a typo in my post, nothing to do with the problem at hand	[reply]
Re^2: Perl thinks it's the shell! by Stoffe (Sexton) on Jun 02, 2005 at 19:01 UTC
Verging on OT, but: Also, I believe Apache uses the #! line rather the file association. Correct. When I used Windows, I always installed ActivePerl to `c:/usr/` instead of the standard `c:/Perl/`, this way the standard shebang (`#!/usr/bin/perl`) worked without any conversions, assuming of course that Apache also was on `C:`	[reply]
Re^3: Perl thinks it's the shell! by Phaysis (Pilgrim) on Jun 03, 2005 at 14:32 UTC
What I do is install Activestate Perl in the default spot then create the directory path `C:\usr\bin\` into which I drag-drop a copy of `perl.exe`. Apache uses this executable as detailed in the shebang `#!/usr/bin/perl` . Since the executable knows where its libs are, everything works like a charm. You can then take your locally-developed scripts and port them to nix platforms if you want with nary an edit! (P^h)* Phaysis (Shawn) If idle hands are the tools of the devil, are idol tools the hands of god?	[reply] [d/l] [select]


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