Home / ubuntu / Questions / 760152
Accepted
beginner_user
Asked: 2016-04-22 12:39:11 +0800 CST

How to see if a specific process is running or not for 1 hour in shell

  • 772

My process name is test. If I use

ps -ef | grep test

I see that process is running. Now I want to check this every 10 mins for one hour and print success if it's running successfully for one hour. What is the best way to do so?

scripts

2 Answers

  1. Best Answer

    You can use a while loop; here i am using pgrep to check if the process is running:

    #!/bin/bash
counter=0
while :; do
    [ "$counter" -eq 6 ] && break
    if pgrep <process_name> &>/dev/null; then
        echo "Success !!"
        (( counter += 1 ))
        sleep 10m
    else
        echo "Process not running..exiting !!"
        break
    fi
done

    Replace <process_name> with the actual name of the process you want to track.

    • 2

  2. A simple loop in a script:

    #! /bin/bash
start=$SECONDS
while (( SECONDS - start < 3600 ))
do
    sleep 10m
    pgrep -f test &>- || exit
done
echo success

    SECONDS is a special variable in bash that contains the number of seconds since the script has started. pgrep test checks for a process named test. If it doesn't find one, we exit the script. If not, we sleep for 10 minutes.

    If we didn't exit, then pgrep was successful. So, echo success.

    • 0