The Linux root Filesystem
The Linux root filesystem contains files and executables that the kernel requires, as well as executables for system administration. In a desktop workstation installation, the kernel mounts a hard disk partition on the / directory. The following directories exist beneath the / directory:
/bin and /sbin contain system executables such as init, ifconfig, mount, cd, mkdir, and ping.
/lib contains the shared libraries (libc and others) and the Linux dynamic loader.
/etc contains system configuration files and scripts.
/dev contains special device files.
The kernel dynamically creates the /proc directory in memory to provide system information.
/usr contains additional programs and libraries.
/var contains files that change during ...
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