User account information: /etc/passwd. 1. Username: used when user logs in Files, directories, memory devices, I/O devices etc. are uniformly treated as resources subject to access control.
User Authentication HOWTO | 2.1. /etc/passwd
The /etc/passwd file, which contains information about all users, including their encrypted password, is readable by all users, making it possible for any user to get the encrypted password of everyone on...