passwd is a
*nix program used to change a
user or
group password.
A
normal user can only change the
password for their
own account (anything else would be a
security risk) but the
super user may change the password for any
account and the
administrator of a group can change the password for that group.
It is very
important that the super user can change other peoples passwords because
they will forget any password they use.
passwd can also be used to
change account information such as
Full Name,
login shell, and
password expiry dates and
intervals.