.TH PASSWD 5 .SH NAMEpasswd \- password file.SH DESCRIPTION.I Passwdcontains for each user thefollowing information:.HP 10name (login name, contains no upper case).br.ns.HP 10encrypted password.br.ns.HP 10numerical user ID.br.ns.HP 10numerical group ID.br.ns.HP 10GCOS job number, box number, optional GCOS user-id.br.ns.HP 10initial working directory.br.ns.HP 10program to use as Shell.PPThis is an ASCII file.  Each field within each user's entryis separated from the next by a colon.The GCOS field is used only when communicating with thatsystem, and in other installations can containany desired information.Each user is separated from the next by a new-line.If the password field is null, no password is demanded;if the Shell field is null, the Shell itselfis used..PPThis file resides in directory /etc.Because of the encryptedpasswords, it can and does have general readpermission and can be used, for example,to map numerical user ID's to names..SH FILES/etc/passwd.SH "SEE ALSO"getpwent(3), login(1), crypt(3), passwd(1), group(5)