passwd

PASSWD(5)                 Formati di file e conversioni                PASSWD(5)



NOME
       passwd - il file delle password

DESCRIZIONE
       /etc/passwd contains one line for each user account, with seven fields
       delimited by colons («:»). These fields are:

       •   nome di login

       •   password cifrata opzionale

       •   ID utente numerico

       •   ID gruppo numerico

       •   nome utente o commento

       •   directory home utente

       •   interprete dei comandi utente opzionale

       If the password field is a lower-case «x», then the encrypted password is
       actually stored in the shadow(5) file instead; there must be a
       corresponding line in the /etc/shadow file, or else the user account is
       invalid.

       The encrypted password field may be empty, in which case no password is
       required to authenticate as the specified login name. However, some
       applications which read the /etc/passwd file may decide not to permit any
       access at all if the password field is blank.

       A password field which starts with an exclamation mark means that the
       password is locked. The remaining characters on the line represent the
       password field before the password was locked.

       Refer to crypt(3) for details on how this string is interpreted.

       If the password field contains some string that is not a valid result of
       crypt(3), for instance ! or *, the user will not be able to use a unix
       password to log in (but the user may log in the system by other means).

       The comment field is used by various system utilities, such as finger(1).

       The home directory field provides the name of the initial working
       directory. The login program uses this information to set the value of
       the $HOME environmental variable.

       The command interpreter field provides the name of the user's command
       language interpreter, or the name of the initial program to execute. The
       login program uses this information to set the value of the $SHELL
       environmental variable. If this field is empty, it defaults to the value
       /bin/sh.

FILE
       /etc/passwd
           Informazioni sugli account utente.

       /etc/shadow
           file opzionale delle password cifrate

       /etc/passwd-
           Copia di backup di /etc/passwd.

           Notare che questo file viene usato dagli strumenti del pacchetto
           shadow, ma non da tutti gli strumenti per la gestione di utenti e
           password.

VEDERE ANCHE
       crypt(3), getent(1), getpwnam(3), login(1), passwd(1), pwck(8),
       pwconv(8), pwunconv(8), shadow(5), su(1), sulogin(8).



shadow-utils 4.8.1                 23/01/2020                          PASSWD(5)