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PASSWD(5)		 File Formats and Conversions		     PASSWD(5)

NAME
       passwd -	the password file

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

       o   login name

       o   optional encrypted password

       o   numerical user ID

       o   numerical group ID

       o   user	name or	comment	field

       o   user	home directory

       o   optional user command interpreter

       The encrypted password field may	be blank, 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. 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. If the password
       field is	any other string, then it will be treated as an	encrypted
       password, as specified by crypt(3).

       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.

FILES
       /etc/passwd
	   User	account	information.

       /etc/shadow
	   optional encrypted password file

       /etc/passwd-
	   Backup file for /etc/passwd.

	   Note	that this file is used by the tools of the shadow toolsuite,
	   but not by all user and password management tools.

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

shadow-utils 4.1.5.1		  05/25/2012			     PASSWD(5)

NAME | DESCRIPTION | FILES | SEE ALSO

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<https://www.freebsd.org/cgi/man.cgi?query=passwd&sektion=5&manpath=Debian+7.7.0>

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