You open the script itself (location stored in $0) on filehandle F and assign the first two lines to $_.

Then you start a substitution operating on $_, with ; as a delimiter, so de-obfuscated (using a | as delimiter) it looks like: 

$_=~s|^.*?\/(..).*?i(.).(.*?)\s.*?\ss(.)(.).(.).*|J$1$4 a$2o$4he$5 $3 
+ha$6ke$5!|;

[download]
You basically scan the first two lines for some stuff:
  1. The two chars following the first slash go into $1 ('us') 
    #!/usr/bin/perl -w
use strict;
  2. Then you scan for the next 'i' and save the following char in $2 ('n') 
    #!/usr/bin/perl -w
use strict;
  3. You skip the next char and save everything up to the next space in $3 ('perl') 
    #!/usr/bin/perl -w
use strict;
  4. You skip to the next space followed by 's' and save the next char in $4 ('t') 
    #!/usr/bin/perl -w
use strict;
  5. The next char goes into $5 ('r') 
    #!/usr/bin/perl -w
use strict;
  6. Then skip one and save the last in $6 ('c') 
    #!/usr/bin/perl -w
use strict;
and then print the new value of $_.

But I still don't know what the c in cjaph stands for ...

In reply to Re: cjaph - SOLUTION by domm
in thread cjaph by Darkling

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!
  • 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, details, 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, summary, 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.