[kwlug-disc] Sleep until command is finished

[Znoteer]

I'm going to go on a limb here:

On Thu, Jan 06, 2022 at 01:06:13PM -0500, Charles M wrote:
> 
> #!/bin/bash
> sudo smartctl -t short /dev/sda &
> while ps -p $PPID > /dev/null; do sleep 1; done;
> sudo smartctl -l selftest /dev/sda | grep "# 1"
> 
> This seems to hang after smartctl starts the short test. I've waited

I'm guessing an infinite loop on the value of PPID.

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