Disclaimer: The script worked great, so no worries about getting it functional. Just looking for some commentary :)

So I use OS X Leopard (my first real experience with a Unix-like system, so I'm a noob in that area too), which comes with 5.8.8. After reading about some of the cool stuff in 5.10 I decided to go for it, and put it in /usr/local. I then wanted everything to use the new install by default, and not knowing anything really about how $PATHs work, here is the method I used: 
use File::Basename;
my @local = map {basename $_} grep 1 > -M, </usr/local/bin/*>;
my @files = grep -e, map "/usr/bin/$_", @local;
rename $_, "$_.5.8" for @files;
symlink "/usr/local/bin/$_", "/usr/bin/$_" for @local;

[download]


I tried to apply what I learned about grep and map from my previous thread, but I went and used $_ explicitly again :\ (it's just too convenient).
I know in the future I'd want a better initial test than "files modified today" like what I used in the first line... it just seemed like the easiest way to get all the binaries created by the just-completed perl install.

I was very impressed that it ended up taking 4 lines of code!

So, on a scale of 1 to Retarded, how did it turn out? Braces himself.

In reply to My first USEFUL script! by nefigah

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.