Reason
I installed zsh in on my personal computer and servers, and uses the time command to view how much time a process took. However, once I wanted to see also how much memory a process allocated, and found that the time command could do much more. The original time format:
TIMEFMT='%J %U user %S system %P cpu %*E total'To see more information, I changed it to:
TIMEFMT='%J %U user %S system %P cpu %*E total'$'\n'\
'avg shared (code): %X KB'$'\n'\
'avg unshared (data/stack): %D KB'$'\n'\
'total (sum): %K KB'$'\n'\
'max memory: %M KB'$'\n'\
'page faults from disk: %F'$'\n'\
'other page faults: %R'