Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris

comment on

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

I'm not awake enough to deal with buffering of print statements, but I will compliment you on re-inventing the concept of a pidfile. Good going! {and, I don't mean that facetiously! :-}

There's another cool concept in UN!X and BSD and Linux called "respawning" in init. In Linux (since you mentioned that) you just find the little file called /etc/inittab and add a line at the end of it with your program name, like so:

my:2345:respawn:/usr/local/bin/ -m -y --options

where 'my' is a token up to three characters, '2345' says run it in all Runlevels from multi-user to X GUI, 'respawn' says 'restart if it dies', and the rest is the path to your executable program and its options.

To kick it off, either reset the init process with kill -1 1 or restart your computer. This is a simplified description, but the result is that the init process will do all your restarting work for you. You won't have direct writing of stderr or stdout to a terminal there, but you can learn how to associate your process with a running program or with syslogd and there you go, off on another exploration! :D

Don Wilde
"There's more than one level to any answer."

In reply to Re: Auto-restarting script if it dies by samizdat
in thread Auto-restarting script if it dies by mojodaddy

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
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others rifling through the Monastery: (3)
    As of 2021-01-24 00:16 GMT
    Find Nodes?
      Voting Booth?