I've been tasked with performing a lockdown on a user account (making it impossible to properly login-in to) in a very specific way. Im prohibited from:
a) Altering his password (so passwd -l is out as I take it)
b) Altering its expiration date ( so no chage -E)
c) Changing its shell (no chsh)
I honostly have no idea how to handle this. Any ideas?