I'm making a script which checks the health of my server at home. 

```
smartctl -t short /dev/sda | awk '/Please wait/ {print $3}'

```

This command shows how long it takes before the SmartCTL finish testing. 
But just to be sure, I want to add a command sleep, with the output of that command plus 1 minute, to make sure it's really finished.

Could someone help me out?