Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Re^2: (OT) Fixing Line Endings

by jbert (Priest)
on Nov 30, 2006 at 14:48 UTC ( #586951=note: print w/ replies, xml ) Need Help??


in reply to Re: (OT) Fixing Line Endings
in thread (OT) Fixing Line Endings

The #!...\n line at the beginning of an executable file on a Unix system is recognised as telling the kernel that this is a script, to be passed to the interepreter named in the ... part.

If the line is '#!/usr/bin/perl\r\n' (as it would be on a Windows box), the kernel will attempt to find a file called '/usr/bin/perl\r'.

It's a hilarious (but real) solution.


Comment on Re^2: (OT) Fixing Line Endings
Re^3: (OT) Fixing Line Endings
by Melly (Hermit) on Nov 30, 2006 at 14:56 UTC

    Ah! Tnx. Hmm... couldn't you create a perl script /usr/bin/perl\\r and have that handle the problem?

    Tom Melly, pm@tomandlu.co.uk
      Creating the symlinks is an even lighter-weight way of doing it.
      Hmm... couldn't you create a perl script /usr/bin/perl\\r and have that handle the problem?

      That's essentially what they did. A symbolic link is a UNIX way of saying: "this file is the same as that file over there". They're like Perl references, only for a file system.

      The real problem was getting the symlink command to run from the shell command line: eventually, they gave up, and used perl instead...

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://586951]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (10)
As of 2014-12-29 14:07 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (188 votes), past polls