Quick stats:

sudo /usr/sbin/smartctl -a /dev/sda (show smartctl status)
sudo /usr/sbin/smartctl -t short /dev/sda (start short 2 minute test, in background)
sudo /usr/sbin/smartctl -t long /dev/sda (start long 40 minute test, in background)
sudo /usr/sbin/smartctl -l selftest /dev/sda (monitor test status)
sudo /usr/sbin/smartctl -l error /dev/sda (dump test errors)

The longer testing mode can be done while jobs are running (non-destructive)

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