times
Print the accumulated user and system times for the shell and for processes run from the shell.
The return status is zero.
Output format: user_time system_time (shell) user_time system_time (children)
Where each time is in the format NmN.NNNs (minutes and seconds).
Since the BEAM VM doesn't distinguish user vs system CPU time, we report
:erlang.statistics(:runtime) elapsed since session start as user time
and 0m0.000s for system time.
Reference: https://www.gnu.org/software/bash/manual/html_node/Bourne-Shell-Builtins.html#index-times