How to monitor application activity in Linux?

Question

linux

The application does not provide logs. I don't use it very often, once every few days. And often it turns out to be unloaded. I want to track the approximate frequency with which it completes its work, so that later, through cron, for example, restart it every few hours.

Answer 1

Run a primitive checker on cron, which will announce to the log the fact that the application has been restarted, or that it is running. For example, I wrote a cheat for the winbind process a long time ago

entries=`ps -ax | grep winbindd | grep -v grep | wc -l`

if [ $entries -eq 0 ]; then
  cd /usr/local/etc/rc.d
  samba start
  /usr/bin/logger -4 -i -t chkwinbind -p daemon.info Winbindd crash detected, process restarted
 else
   /usr/bin/logger -4 -i -t chkwinbind -p daemon.info Running $entries winbindd process\(es\)
fi

Answer 2

unix.stackexchange.com/questions/15348/writing-base...