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Full Discussion: [PHP] endless loop mimics a cron. Make sure only one instance is running
Top Forums Shell Programming and Scripting [PHP] endless loop mimics a cron. Make sure only one instance is running Post 302271224 by tderscheid on Wednesday 24th of December 2008 09:36:09 AM
Old 12-24-2008
Your script has a log file, right? Have it write to the log file after it's finished doing whatever it does, and before it sleeps:

Code:
echo 'date' Done - going to sleep >> /tmp/script.sleep.log


You can then tail -f the log and watch it roll, check the timestamp on it to see when last updated, figure out when it failed, etc.

I usually count processes by doing something like this:

Code:
ps -aef | grep -v grep | grep very_unique_scriptname | wc -l | bc

 

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LEARN ABOUT XFREE86

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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