bo@boo:~/Desktop$ sudo su
[sudo] password for bo:
Sorry, try again.
[sudo] password for bo:
root@boo:/home/bo/Desktop# fs=$(df / | tail -1 | cut -f1 -d' ') && tune2fs -l $fs | grep 'Filesystem created'
Filesystem created:       Sun Mar 28 15:56:08 2021
root@boo:/home/bo/Desktop#