Common Unix/Linux directories

Common Unix/Linux directories and their contents.

Directory	Contents
/bin	Essential programs and commands for use by all users
/boot	Files used in booting the operating system
/dev	Device folder, such as alarm, cdrom, cpu, cdrw, etc.
/etc	System configuration files and global settings
/etc/sysconfig	Files that control the system configuration
/etc/X11	Configuration files for X Window System
/lib	Shared libraries
/home	Home directories for users
/lost+found	Recovering files which are not properly closed due to many reason such as power failure
/misc	This directory is used for automatically mounting directories on removable devices and remote directories
/mnt	The mount points for file systems mounted after the system is booted
/opt	Optional application software packages
/proc	Location of virtual file system
/root	Home directory for root user
/sbin	Essential system binaries
/tmp	Temporary files
/usr/bin	Commands and programs that are less central to basic Unix system functionality than those in /bin but still useful and often important
/usr/include	Standard include file and header files for C programs
/usr/lib	Libraries for installed packages
/usr/local	Most files and data that were developed or customized on the system
/usr/share	Shared data file
/var	Changeable data, including system logs, temporary data from programs, and user main storage