Root Dir

DirectoryWhat’s in it?
/binBasic user-related programs are here. Command shells and programs such as ls.
/bootLILO boot-related files
/devBlock and character device files.
/etcConfiguration and system initialization files.
/homeUser home directories, except root.
/libEssential libraries (like the system C library and kernel modules).
/mntGeneric mountpoint for fixing filesystems.
/optOptional software packages. Slackware installs KDE to this location.
/procProc filesystem mountpoint for kernel interaction.
/rootRoot’s home directory.
/sbinSystem binaries. Programs run by root or at boot time.
/tmpTemporary directory. Everyone has read+write permissions here.
/usrUser-related programs such as X11, netscape, and pine.
/varSystem log files, lock files, mail spools, and printer spools.

In addition to these basic directories, there may be some others. For example, you may have a /mnt/cdrom directory for mounting your CD-ROM drive or /mnt/floppy for mounting a floppy diskette.