[kwlug-disc] Sleep until command is finished

[Alex K]

Isn't PPID your bash process?

Try

#!/bin/bash
sudo smartctl -t short /dev/sda &
process_id=$!
wait $process_id
sudo smartctl -l selftest /dev/sda | grep "# 1"

On Thu, Jan 6, 2022 at 1:07 PM Charles M <chaslinux at gmail.com> wrote:

> My bash-foo is very rusty. I'm trying to run smartmontools to check a
> drive using the short test option (which usually takes less than 2
> minutes to complete). After the command is finished I want to then
> probe for the results of the test. Here's my script:
>
> #!/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
> well after the time smartctl should finish and it doesn't seem to
> finish and run the second smartctl command.
>
> Thanks,
>
> Charles
>
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