Provided by:
passwd_4.1.4.2-1ubuntu3_i386 
usermod -
usermod [-c comment] [-d home_dir [ -m]]
[-e expire_date] [-f inactive_time]
[-g initial_group] [-G group[,...]]
[-l login_name] [-s shell]
[-u uid [ -o]] login
usermod
usermod
-c comment
password
chfn(1)
-d home_dir
-m
-e expire_date
MM/DD/YY.
-f inactive_days
0
-1 -1
-g initial_group
ID ID 1
-G group,[...]
groups
","
-g
-l login_name
login login_name
-s shell
shell shell
-u uid ID ID -o
999
0~ 999
user ID
usermod
usermod user ID, user
crontab
at
NIS server server NIS
/etc/passwd -
/etc/shadow -
/etc/group -
chfn(1),
chsh(1), groupadd(8), groupdel(8), groupmod(8), passwd(1), useradd(8),
userdel(8)
Julianne Frances Haugh (jfh@tab.com)
USERMOD(8)