As I have posted before, I am a great proponent of implementing within Perl rather than invoking another shell and relying on external programs. With that in mind, I would recommend the usage of Proc::ProcessTable which I have reviewed previously on this site here.

Using Proc::ProcessTable, your code would look something like this:

use Proc::ProcessTable;

my $running = 0;
my $proc = Proc::ProcessTable->new;
foreach ( @{ $proc->table } ) {
    if ($_->cmndline =~ /nameofprocess/) {
        $running = 1;
        last;
    }
}
if (!$running) {
    #   do something to reinvoke process
}

[download]

Much neater than using non-portable ps calls and nasty regular expressions to my mind :-)

 

perl -e 's&&rob@cowsnet.com.au&&&split/[@.]/&&s&.com.&_&&&print'

In reply to Re: Process Monitoring Script by rob_au
in thread Process Monitoring Script by tradez

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.