useradd – Create a new user.

Summary

useradd creates a new user with specified options like username, home
dir, group details, password, etc …

Example

# useradd usr1 — Add new user usr1 with default settings.

# useradd usr1 -d /home2/usr1 – Create the new user’s home dir in
                                 /home2

# useradd usr1 -e 2009-04-30 — From 30/4/2009 the user acc will be
                                disabled.

# useradd usr1 -f 6 – After passwd expires, system will allow the
                       user to login for 6 days with a warning to
                       change his passwd.

# useradd usr1 -g staff -G student,lect, prof – Set his initial group
                 as staff and sublimentry group as office, lect, prof.

# useradd usr1 -p $1$d8 — Create the usr1 with the given encrypted
                           password. For No passwd, acc disabled.

# useradd usr1 -s /bin/csh – Set C Shell as the default login
                              shell for the usr1.