By default system-wide configuration files are stored in /etc, while an individual user configuration files are stored /home/user_loging_name.

Examples:

Administrative settings

• /etc/passwd
• /etc/shadow
• /etc/group
• /etc/crontab
• /etc/inittab
• /etc/issue
• /etc/issue.net
• /etc/motd
• /etc/rc.d/rc.local

Network configuration

• /etc/hosts
• /etc/hosts.allow
• /etc/hosts.deny
• /etc/resolv.conf
• /etc/inetd.conf
• /etc/exports

Hardware configuration

• /etc/conf.modules
• /etc/fstab
• /etc/mtab
• /etc/lilo.conf
• /etc/printcap
• /etc/termcap
• /etc/X11/XF86Config
• /etc/X11/XF86Config-4

 /boot /grub /grub .conf - with exception this file are stored in /boot

More explanation of each file purpose will be explain in later subjects.