Make sure your script always uses absolute paths when working with files. Don't assume it'll always start in the same directory you developed it in. As an example, 
open my $fh, "<file.dat" or die "Error: $!\n";

[download]
The above open() will most likely fail because the statement was written with an assumption that "file.dat" is in the current working directory.
The same applies to your own libraries. If you had a .pm file in the same directory as your script, "use MyMod;" will no longer work when the script is executed from CRON. To fix, include "use lib '/path/to/libs/';"

--perlplexer

In reply to Re: How to Use a Cron Job by perlplexer
in thread How to Use a Cron Job 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!
  • 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.