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.

May 31, 2010 · At the beginning of your shell script, write the PID to a file (for example, in /var/run). Then, you can just search for that PID to know if the process is done or not. You can get the PID of your shell script using the built-in $$ variable.

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.

Apr 22, 2010 · I'm running Ubuntu 9.04, but I imagine it's similar for all *nix systems... ps -ef will show you list of the currently running processes. Last field is the process name and parameters. Find the process you are looking for, and look at the 2nd column. 2nd column is process id or pid. Then do kill -9 <pid> to kill that particular process.

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 …

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

Jun 8, 2016 · Using /usr/env/bin bash prevents you from determining which script is running. Instead you should specify exactly were the bash executable is for the machine you're running on.

In PS AUX the command appears as "/bin/sh /path/to/script.sh" and I can see the PID. But when I run: It says the script is not running. Should I be using the /bin/sh bit, or just the full script path, or just the script filename? The stop part of the init script utilises "killproc".

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.