PASSWD(C)                XENIX System V                 PASSWD(C)



     Name
          passwd - Changes login password.

     Syntax
          passwd name

     Description
          This command changes (or installs) a password associated
          with the login name.

          The program prompts for the old password (if any) and then
          for the new one (twice).  The user must supply these.
          Passwords can be of any reasonable length, but only the
          first eight characters of the password are significant.  The
          minimum number of characters allowed in a new password is
          determined by the PASSLENGTH variable.  Although the minimum
          can be 3, a minimum of 5 characters is strongly recommended
          since passwords shorter than this are much easier to guess
          or discover by trial and error.

          Only the owner of the name or the super-user may change a
          password; the owner must prove he knows the old password.
          Only the super-user can create a null password.

          The password file is not changed if the new password is the
          same as the old password, or if the password has not
          ``aged'' sufficiently; see passwd(M)).

          The minimum length of a legal password, and the minimum and
          maximum number of weeks used in password aging are specified
          in /etc/default/passwd by the variables PASSLENGTH, MINWEEKS
          and MAXWEEKS.  If not explicitly set, the default values for
          these variables are:
               PASSLENGTH=5
               MINWEEKS=2
               MAXWEEKS=4
          MINWEEKS and MAXWEEKS values must be in the range 0 to 63.
          If PASSLENGTH is not in the range 3 to 8, it is set to 5.
     Files
          /etc/default/passwd
          /etc/passwd
     See Also
          default(M), login(M), passwd(M), pwadmin(C)












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