A) Super Search for daemon will find some nodes on writing perpetual "background" processes. There are some fiddly bits to look after, but Proc::Daemon will do a fine job of that for you.
B) A convenient way of using a lockfile is with sysopen;
sysopen my $fh, '/var/lock/mydaemon', O_EXCL | O_RDWR
or die "$0 is already running";
You should ensure that you call unlink '/var/lock/mydaemon';
in every exit path your code may take.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
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:
Outside of code tags, you may need to use entities for some characters:
- 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
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||