Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Yeah, I know about the "anywhere in the script" thingy, but
perl -pi.bak -e 's[^#!/usr/local/bin/perl][#!/usr/bin/perl]' *.pl
yields a "/usr/local/bin/perl][: Event not found." error on my Perl 5.6.1 system, which is why I didn't post my original answer with an anchor metacharacter. Don't really know why the "^#!" is freaking out the regex, but on further examination it looks like the ! has to be escaped. I've corrected the code in my original post to compensate.

And all of this:

perl -pi.bak -e 'BEGIN{$c=@ARGV};s[^#!/usr/local/bin/perl][#!/usr/bin/ +perl] && $c-- if $c> @ARGV' *.pl
can replaced with this:
perl -pi.bak -e 'BEGIN{undef $/};s[^#\!/usr/local/bin/perl][#\!/usr/bi +n/perl]' *.pl
...which at least saves some typing, and is a bit more understandable besides. :-D

Gary Blackburn
Trained Killer

Update: The exclamation mark needs escaping because I'm using tcsh, a csh-style shell. Anyone using a different type of shell (such as bash or other Bourne-type shell) shouldn't have to escape the ! at all. What a pain in the butt... :-(


In reply to Re: Re: Re: question about perl by Trimbach
in thread How do I change the shebang line for all perl scripts in a directory by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others imbibing at the Monastery: (20)
    As of 2015-07-06 17:47 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (79 votes), past polls