Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Ignoring, for the moment, your misuse of "system" (please do follow Corion's advice - it's dead on target), you could do it this way (a.k.a. "crude but effective"):

#!/usr/bin/perl -w use strict; # This is file1 my $error = 10; print "$error.\n";
#!/usr/bin/perl -w use strict; # This is file2 print "Before: "; # Run the first script do "file1"; my $new_error_value = 20; @ARGV = "file1"; { local $^I = ""; # Enable in-place editing while (<>){ s/(\$error\s*=\s*)\d+/$1$new_error_value/; print; } } print "After: "; # Run the first script do "file1";

Or, if you really insist on using "system":

#!/usr/bin/perl -w use strict; # This is file2 print "Before: "; # Run the first script do "file1"; system "/usr/bin/perl", qw{-i -wpe s/(\$error\s*=\s*)\d+/${1}20/ file1 +}; print "After: "; # Run the first script do "file1";

Update: Tweaked regex to remove unnecessary parens (just because I'm picky like that. ;)

"Language shapes the way we think, and determines what we can think about."
-- B. L. Whorf

In reply to Re: Global Variable by oko1
in thread Global Variable by abithajames

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!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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?

    What's my password?
    Create A New User
    [choroba]: marto I don't know them, but their fb page has a black avatar and background...
    [marto]: #deletefacebook

    How do I use this? | Other CB clients
    Other Users?
    Others wandering the Monastery: (7)
    As of 2018-03-22 09:42 GMT
    Find Nodes?
      Voting Booth?
      When I think of a mole I think of:

      Results (273 votes). Check out past polls.