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--- linux_wiki:file_system_hierarchy [2015/11/16 22:34]
billdozor created
+++ linux_wiki:file_system_hierarchy [2019/05/25 23:50]
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-====== File System Hierarchy ======
-**General Information**
-Some of the most common top level directories in the Linux file system.
-**Sources**
-  * man hier
-  * Linux Foundation: http://refspecs.linuxfoundation.org/fhs.shtml
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-====== Top Level Directories ======
-^  Directory  ^  Used For  ^
-|  /  | Root directory; file system tree starts here |
-|  /bin  | Executable programs needed to repair system; essential during boot |
-|  /boot  | All files needed to boot the Linux kernel |
-|  /dev  | Special/device files; refer to physical device  |
-|  /etc  | "etcetera"; configuration files local to the system |
-|  /home  | User local home directories |
-|  /lib and /lib64  | Shared libraries used by programs in /boot,/bin, /sbin |
-|  /media and /mnt  | Mount points for removable media and temporary file systems respectively  |
-|  /opt  | Add on or optional packages |
-|  /proc  | Pseudo-filesystem that provides information on running processes and the kernel |
-|  /root  | Home directory for the root user |
-|  /run  | Process/user specific info created since last boot |
-|  /sbin  | Similar to /bin, except for system administration not used by regular users |
-|  /srv  | Directory to use for data used by services (such as NFS, FTP, HTTP) |
-|  /sys  | To interface with hardware devices managed by the kernel |
-|  /tmp  | Temporary files that could be deleted without warning during boot |
-|  /usr  | Directory containing sub directories with program files, libraries, and documentation. Typically mimics the contents of /. Not required during boot. |
-|  /var  | Files that can change dynamically (log files, mail, and spool files) |
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-====== Common Directories with Own Partition ======
-It is common to separate the following directories onto their own mount point/partition:
-  * / => isolate the core OS away from the rest of the system.
-  * /boot => isolate kernel boot images, cannot be LVM.
-  * /home => in order to isolate user data from the rest of the system.
-  * /tmp => isolate world writeable /tmp to give more secure mount options.
-  * /var => isolate other variable data that could grow from affecting the rest of the system. (yum cache, common place for applications to write to)
-  * /var/log => prevent run away log files from affecting the rest of the system.
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