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| Chapter 2 UNIX Commands |

## passwd

    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 their `user` name.

### Option

-s

  Display password information:

  1. `user` name.

  2. Password status (NP for no password, PS for password, LK for locked).

  3. The last time the password was changed (in `mm``/dd``/yy` format).

  4. Number of days that must pass before `user` can rechange the password.

  5. Number of days before the password expires.

  6. Number of days prior to expiration that `user` is warned of impending expiration.

### Options (privileged users only)

-a

  Use with -s to display password information for all users. `user` should not be supplied.

-d

  Delete password; `user` is no longer prompted for one.

-f

  Force expiration of `user`'s password; `user` must change password at next login.

-l

  Lock `user`'s password; mutually exclusive with -d.

-n

  Set item 4 of `user`'s password information. Usually used with -x.

-w

  Set item 6 for `user`.

-x

  Set item 5 for `user`. Use -1 to disable password aging, 0 to force expiration like -f.

Reference: page |  | Reference: paste