-a, --all
    This option can be used only with -S and causes show status for all users.

-d, --delete
    Delete a user's password (make it empty). This is a quick way to disable a password for an account.
    It will set the named account passwordless.

-e, --expire
    Immediately expire an account's password. This in effect can force a user to change his/her password
    at the user's next login.

-h, --help
    Display help message and exit.

-i, --inactive INACTIVE
    This option is used to disable an account after the password has been expired for a number of days.
    After a user account has had an expired password for INACTIVE days, the user may no longer sign on to
    the account.

-k, --keep-tokens
    Indicate password change should be performed only for expired authentication tokens (passwords). The
    user wishes to keep their non-expired tokens as before.

-l, --lock
    Lock the password of the named account. This option disables a password by changing it to a value
    which matches no possible encrypted value (it adds a ´!´ at the beginning of the password).

    Note that this does not disable the account. The user may still be able to login using another
    authentication token (e.g. an SSH key). To disable the account, administrators should use usermod
    --expiredate 1 (this set the account's expire date to Jan 2, 1970).

    Users with a locked password are not allowed to change their password.

-n, --mindays MIN_DAYS
    Set the minimum number of days between password changes to MIN_DAYS. A value of zero for this field
    indicates that the user may change his/her password at any time.

-q, --quiet
    Quiet mode.

-r, --repository REPOSITORY
    change password in REPOSITORY repository

-S, --status
    Display account status information. The status information consists of 7 fields. The first field is
    the user's login name. The second field indicates if the user account has a locked password (L), has
    no password (NP), or has a usable password (P). The third field gives the date of the last password
    change. The next four fields are the minimum age, maximum age, warning period, and inactivity period
    for the password. These ages are expressed in days.

-u, --unlock
    Unlock the password of the named account. This option re-enables a password by changing the password
    back to its previous value (to the value before using the -l option).

-w, --warndays WARN_DAYS
    Set the number of days of warning before a password change is required. The WARN_DAYS option is the
    number of days prior to the password expiring that a user will be warned that his/her password is
    about to expire.

-x, --maxdays MAX_DAYS
    Set the maximum number of days a password remains valid. After MAX_DAYS, the password is required to
    be changed.