- /etc/issue – Pre-login message file.
- /etc/motd – Message of the day. Post-login message file
- /etc/shells – List of (and path too) valid login shells. For a shell to be used in /etc/passwd is MUST be listed in /etc/shell.
- /etc/default – Folder location of default settings for useradd, passwd, nss, and rmt. (Suse specific?)