find any script which is running for more than say 30 minutes in Linux System

Question

Please share command to find any script which is running for more than say 30 minutes. in Linux System

Answer 1

the ps command has an etimes field, that gives you the time since a given process has been started, in seconds.

the following bash script will output the PIDs of processes that have been running for longer than 30 minutes.

#!/bin/sh
MIN=30
SEC=$((MIN*60))
ps -eo etimes=,pid= | while read sec pid; do
 if [ ${sec} -gt ${SEC} ]; then
   echo ${pid}
 fi
done

Answer 2

Assuming GNU date + ps, this gives you a list of pids older than 30 minutes:

# weird format to match ps -o lstart
cutoff=$(date -d '30 minutes ago' +'%a %b %e %T %Y')
ps -e -o lstart,pid |
awk '$0 < "'"$cutoff"'" {print NF}'

On linux, you can then check whether /proc/$pid/exe resolves to a known interpreter like /bin/sh, /bin/bash or /usr/bin/python - if so, you know it's a script.