Specific Options
The following directories, or symbolic links to directories must be in /etc, if the corresponding subsystem is installed:
The following files, or symbolic links to files, must be in /etc if the corresponding subsystem is installed: [6]
| File | Description |
|---|---|
| csh.login | Systemwide initialization file for C shell logins (optional) |
| exports | NFS filesystem access control list (optional) |
| fstab | Static information about filesystems (optional) |
| ftpusers | FTP daemon user access control list (optional) |
| gateways | File which lists gateways for routed (optional) |
| gettydefs | Speed and terminal settings used by getty (optional) |
| group | User group file (optional) |
| host.conf | Resolver configuration file (optional) |
| hosts | Static information about host names (optional) |
| hosts.allow | Host access file for TCP wrappers (optional) |
| hosts.deny | Host access file for TCP wrappers (optional) |
| hosts.equiv | List of trusted hosts for rlogin, rsh, rcp (optional) |
| hosts.lpd | List of trusted hosts for lpd (optional) |
| inetd.conf | Configuration file for inetd (optional) |
| inittab | Configuration file for init (optional) |
| issue | Pre-login message and identification file (optional) |
| ld.so.conf | List of extra directories to search for shared libraries (optional) |
| motd | Post-login message of the day file (optional) |
| mtab | Dynamic information about filesystems (optional) |
| mtools.conf | Configuration file for mtools (optional) |
| networks | Static information about network names (optional) |
| passwd | The password file (optional) |
| printcap | The lpd printer capability database (optional) |
| profile | Systemwide initialization file for sh shell logins (optional) |
| protocols | IP protocol listing (optional) |
| resolv.conf | Resolver configuration file (optional) |
| rpc | RPC protocol listing (optional) |
| securetty | TTY access control for root login (optional) |
| services | Port names for network services (optional) |
| shells | Pathnames of valid login shells (optional) |
| syslog.conf | Configuration file for syslogd (optional) |
mtab does not fit the static nature of /etc: it is excepted for historical reasons. [7]