This is just a brief description of Linux Directories. Good for newbies.

/bin/ — Used to store user commands. The directory /usr/bin/ also stores user commands.

/sbin/ — Location of many system commands, such as shutdown. The directory /usr/sbin/ also contains many system commands.

/root/ — The home directory of root, the superuser.

/mnt/ — This directory typically contains the mount points for file systems mounted after the system is booted. For example, the default CD-ROM mount point is /mnt/cdrom/.

/boot/ — Contains the kernel and other files used during system startup.

/lost+found/ — Used by fsck to place orphaned files (files without names).

/lib/ — Contains many library files used by programs in /bin/ and /sbin/. The directory /usr/lib/ contains more library files for user applications.

/dev/ — Stores device files.

/etc/ — Contains configuration files and directories.

/var/ — For variable (or constantly changing) files, such as log files and the printer spool.

/usr/ — Contains files and directories directly relating to users of the system, such as programs and supporting library files.

/proc/ — A virtual file system (not actually stored on the disk) that contains system information used by certain programs.

/initrd/ — A directory that is used to mount the initrd.img image file and load needed device modules during bootup.

Note:
Do not delete the /initrd/ directory. You will be unable to boot your computer if you delete the directory and then reboot your Linux system.

/tmp/ — The temporary directory for users and programs. /tmp/ allows all users on a system read and write access.

/home/ — Default location of user home directories.

/opt/ — Directory where optional files and programs are stored. This directory is used mainly by third-party developers for easy installation and uninstallation of their software packages.


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