sa

Summarizes accounting information. Part of the acct package. Shows commands called by users, including basic info on CPU time spent processing and I/O rates. More information: https://manned.org/man/sa.8.

Display executable invocations per user (username not displayed):

sudo sa

Display executable invocations per user, showing responsible usernames:

sudo sa --print-users

List resources used recently per user:

sudo sa --user-summary