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I am making a bash script for my use. How can I run a command for certain time, like 20 seconds and terminate command? I tried a lot of solutions but nothing works, I also tried timeout command with no success. Please give me some solution for this.
For example: I want to run this command in script and terminal after 10 sec
some command 
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Using at. From the interactive shell, you can enter the command you want to run at that time. If you want to run multiple commands, press enter after each command and type the command on the new at> prompt. Once you're done entering commands, press Ctrl-D on an empty at> prompt to exit the interactive shell.
What you could do is write a shell script with an infinite loop that runs your task, and then sleeps for 5 seconds. That way your task would be run more or less every 5 seconds, depending on how long the task itself takes. You can create a my-task.sh file with the contents above and run it with sh my-task.sh .
Here are some bash scripts and a program called timelimit which may solve your problem. Kill process after it's been allowed to run for some time
EDIT: I think I found a better solution. Try using the timeout program. From the man page: "timeout - run a command with a time limit". For example:
timeout 5s sleep 10s It basically runs your command and after the specified duration it will kill it.
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On systems that do not provide timeout command, you can use the following:
your-cmd & sleep 30 ; kill $! That will run potentially long running your-cmd with timeout of 30 seconds.
If your-cmd does not finish within 30 seconds, it will be sent TERM signal.
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