May 30, 2013 · First: it will find "aaa.sh" as well, which can cause errors. Second: grep will find itself, which you have to deal with. Pgrep is the elegant solution. The simplest, most efficient and in one process solution is : or as a condition: do... Check: http://www.explainshell.com/explain?cmd=pgrep+-fl+aa.sh.

Oct 21, 2023 · One way to determine if a Bash script is running is by checking the process status using the. command. The. command displays information about active processes on your system. By filtering the output, you can easily identify if your script is currently running. Here's an example of how you can use the. command to check if a Bash script named.

Nov 6, 2012 · From inside a program, this is a common way to check that a process of known pid is still existing and running (or waiting). You could use the pidof command to find the processes running some executable, e.g. pidof zsh to find all the zsh processes. You could also use killall …

Apr 9, 2014 · Wtite a tmp file to the /tmp directory. have your script check to see if the file exists, if it does then don't run.

Because you are not checking if a specific process is running, you are checking if there are any processes running that happens to match abc. Any user can easily create and run an executable named abc (or that contains abc somewhere in its name …

Oct 19, 2022 · There are various command Linux and Unix command line utilities to check if the program is running with the bash shell. One can glue together a shell script and use bash shell conditional to take certain actation such as restart the process or notify sysadmin via email alert.

Feb 5, 2016 · You can check if the shell script was run on a terminal by analyzing the output of tty command. #! /bin/bash if [[ $(tty) =~ "not a tty" ]] then echo "Not running on terminal" else echo "Running on terminal" fi

Jan 8, 2023 · There are multiple methods to determine duplicate instance and to check if process is already running. I will share some of the methods i commonly use in shell scripts. The most simple and straight forward way to do this would be to use pidof.

Near the top of your script define those variables: DAEMON="/path/to/yourscriptname.sh" PIDFILE="/var/run/yourscriptname/yourscriptname.pid" And, of course, you'll need to make sure that /var/run/yourscriptname exists. Use the existing scripts in /etc/init.d as models for your script.

Feb 10, 2019 · I am using a custom script (stream.sh) which starts on boot. However, I want to check after every 5 minutes if the script is running. If it is not running, I want to run it again. How can I configure it in crontab or else? I am using Ubuntu 18.04.