passwd [options] [user]

Create or change a password associated with a user name. Only the owner or a privileged user may change a password. Owners need not specify theiruser name. Users can change their own passwords. For any other operation, you must be root.

Options

-d, –delete

Delete the password for the user’s account.

-f, –force

Force the operation. Overrides -u.

-?, –help

Display a help message describing the options. See also –usage.

-i days, –inactive=days

Set the number of days after a password has expired before the account is disabled.

-k, –keep-tokens

Keep passwords (authentication tokens) that have not expired.

-l, –lock

Lock the user’s account.

-n days, –minimum=days

Set the minimum number of days that the password is valid.

-S, –status

Print the status of the user’s password.

–stdin

Read new passwords from standard input.

-u, –unlock

Unlock the user’s account

–usage

Display a brief usage message. See also –help.

-w days, –warning=days

Set the number of days of warning users will get before their password expires.

-x days, –maximum=days

Set the maximum number of days that the password is valid

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