-ps: illegal argument: |
usage: ps [-AaCcEefhjlMmrSTvwXx] [-O fmt | -o fmt] [-G gid[,gid...]]
[-g grp[,grp...]] [-u [uid,uid...]]
[-p pid[,pid...]] [-t tty[,tty...]] [-U user[,user...]]
ps [-L]
[Process completed]
Ok just type in “ps” and hit enter. Baby steps