Hello,

I have a script that connects to a remote database, extracts one DNA sequence, runs it through a BLAST program on a different remote machine, and then updates the database with the new information. Rinse and repeat, for every sequence. I want this to be automated, such that if something goes horribly askew, my script can detect this and attempt to pick up where it left off, until it succeeds in doing so. For example, let's say the remote BLAST server goes down and my BLAST system call hangs. In this case, I want to pound the server with a "let me in?", say once every five minutes, until it connects, and then restart from the last successful sequence, which is stored in a tempfile. I also want an interruption to be printed to a log file, and I think that both of these tasks could include altering the SIG handlers, though I am not sure if this is the best way, or what SIG handler(s) would need attention. I suppose a crontab is an option, but I would like to keep everything as contained in my script as possible, rather than having little files flying around here and there, to make it more portable. But if cron is the best way, so be it. So, can anyone enlighten me as to what is involved in having a script "listen" to a process, and facilitate its continuity in the event of interruptions? Many thanks.

In reply to monitor process, sig handlers(?) by Anonymous Monk

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