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6 .\" Manual: File Formats and Conversions
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10 .TH "PASSWD" "5" "16/02/2011" "File Formats and Conversions" "File Formats and Conversions"
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31 passwd \- the password file
36 contains one line for each user account, with seven fields delimited by colons (\(Fo:\(Fc)\&. These fields are:
57 optional encrypted password
90 user name or comment field
112 optional user command interpreter
115 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
117 file may decide not to permit
121 field is blank\&. If the
123 field is a lower\-case
124 \(Fox\(Fc, then the encrypted password is actually stored in the
128 be a corresponding line in the
130 file, or else the user account is invalid\&. If the
132 field is any other string, then it will be treated as an encrypted password, as specified by
135 The comment field is used by various system utilities, such as
138 The home directory field provides the name of the initial working directory\&. The
140 program uses this information to set the value of the
142 environmental variable\&.
144 The command interpreter field provides the name of the user\*(Aqs command language interpreter, or the name of the initial program to execute\&. The
146 program uses this information to set the value of the
148 environmental variable\&. If this field is empty, it defaults to the value
154 informazioni sugli account utente\&.
159 optional encrypted password file
164 Backup file for /etc/passwd\&.
166 Note that this file is used by the tools of the shadow toolsuite, but not by all user and password management tools\&.