Комментарии - DenisVS - Профиль вебмастера - Форум об интернет-маркетинге

30 ноября 2012, 21:13

Проапдейтил. Почитайте инструкцию, она доступна как раз по man passwd.

30 ноября 2012, 21:06

Какое конкретное слово вызывает затруднение?

Вот сейчас, аж 2 окна открыто.

Debian:

PASSWD(1)                        User Commands                       PASSWD(1)



NAME

       passwd - change user password



SYNOPSIS

       passwd [options] [LOGIN]



DESCRIPTION

       The passwd command changes passwords for user accounts. A normal user

       may only change the password for his/her own account, while the

       superuser may change the password for any account.  passwd also changes

       the account or associated password validity period.

FreeBSD:

PASSWD(1)               FreeBSD General Commands Manual              PASSWD(1)



NAME

     passwd, yppasswd — modify a user's password



SYNOPSIS

     passwd [-l] [user]

     yppasswd [-l] [-y] [-d domain] [-h host] [-o]



DESCRIPTION

     The passwd utility changes the user's local, Kerberos, or NIS password.

     If the user is not the super-user, passwd first prompts for the current

     password and will not continue unless the correct password is entered.



     When entering the new password, the characters entered do not echo, in

     order to avoid the password being seen by a passer-by.  The passwd util‐

     ity prompts for the new password twice in order to detect typing errors.



     The new password should be at least six characters long (which may be

     overridden using the login.conf(5) “minpasswordlen” setting for a user's

     login class) and not purely alphabetic.  Its total length must be less

     than _PASSWORD_LEN (currently 128 characters).



     The new password should contain a mixture of upper and lower case charac‐

     ters (which may be overridden using the login.conf(5) “mixpasswordcase”

     setting for a user's login class).  Allowing lower case passwords may be

     useful where the password file will be used in situations where only

     lower case passwords are permissible, such as when using Samba to authen‐

     ticate Windows clients.  In all other situations, numbers, upper case

     letters and meta characters are encouraged.



     Once the password has been verified, passwd communicates the new password

     information to the Kerberos authenticating host.



     The following option is available:



     -l      Cause the password to be updated only in the local password file,

             and not with the Kerberos database.  When changing only the local

             password, pwd_mkdb(8) is used to update the password databases.



     When changing local or NIS password, the next password change date is set

     according to “passwordtime” capability in the user's login class.



     To change another user's Kerberos password, one must first run kinit(1)

     followed by passwd.  The super-user is not required to provide a user's

     current password if only the local password is modified.