0

I check the manual of ps, and it said -e will list all processes, while -u will list processes for a specific user.

So I try to use

ps -eu myaccount | wc -l
and it outputs 280.

But if I use

ps -u myaccount | wc -l
and it outputs 12.

Since both are used to output all the processes for the user

myaccount
, why the result will be different?