troubleshooting Question

stop bash if php script halted

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LinuxPHPSSH / Telnet Software
9 Comments1 Solution725 ViewsLast Modified:

I have a php script that calls a bash script via shell_exec() function:


	$file_name = "/home/full/path/file.txt";
	shell_exec('bash "' . $file_name . '"');

The bash script called looks like this:

# ======================================================= #
while read LINE
	bash "${i}" "${file_size}" < /dev/null &
done < "${file_name}.txt"
# ======================================================= #

# Wait until all jobs are done
for job in `jobs -p`
    # echo $job
    wait $job || let "FAIL+=1"

As you can see, this bash script calls another "child" bash script. I'm basically simulating multi-threading by using &

It works super well (execution speed is insanely fast), except that if user hits the ESCAPE key or stops the php script, these child bash script aren't killed & becomes zombie processes.

This is badly affecting my (dedicated) server. Is there a way to prevent this?
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