Module 2 - The File System

Linux File Types Directories Files (text files & scripts) Binaries Links (soft/symbolic links)

The Linux Directory Tree

Directories and Functions

The Linux PATH What is PATH ? PATH is an environmental variable in Linux and other Unix-like operating systems that tells the shell which directories to search for executable files. /etc/sysconfig/network /home/hagay/Desktop

Absolute and Relative Path An absolute path starts from the top of the tree # cd /home/hagay/Desktop A relative path NEVER starts with / # cd hagay/Desktop * assuming /home is where we are

Navigating in space The cd command (Change Directory) # cd - Take me to my home directory # cd /etc/sysconfig - take me to directory # cd - - take me to the former directory # cd .. - take me one directory UP # cd ~avi - take me to Avi’s home directory

The Linux File System The current default file system is ext4 Previous versions where ext2 and ext3 ext4 can support partition size of up to 1 exbibyte (1 exbibyte = 1,152921.5046068 terabytes) ext4 can support a single file size of approximately 1 terabyte

The Linux File System and Directory Tree Integration In Linux we often integrate the file system (partitions) with the Linux directory tree. Remember our installation ? We created partitions for some of the Top-Level directories: /boot - 500MB partition / - 10GB partition /var - 2GB partition

The Linux Logical Volume Manager LVM is a logical volume manager for the Linux kernel. it manages disk drives and similar mass-storage devices. The term "volume" refers to a disk drive or partition thereof. It was originally written in 1998 by Heinz Mauelshagen, who based its design on that of the LVM in HP-UX.

The Linux LVM Diagram

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