The UNIX file system is organized hierarchically according to the Filesystem Hierarchy Standard.

UNIX follows the philosophy that everything is a file. Directories are indicated with a “/” separator and start from the root directory “/” and different devices are linked to this tree.

Files and directories can be referred to either using absolute or relative file names.

Typically, several elementary programs are pre-installed and allow access and manipulation of files and directories.

• To understand the file system layout and perform typical file operations to access and manipulate the file system.

• Describe the organization of a hierarchical file system
• Explain the basic UNIX permission model and metatada of files
• Describe the Filesystem Hierarchy Standard and the relevance of the directories
  1. etc
  2. home
  3. opt
  4. lib and /usr/lib
  5. bin and /usr/bin
  6. sbin and /usr/sbin
  7. tmp
• Utilize tools to navigate and traverse the file system
  1. ls (-R, -l)
  2. cd
  3. pushd/popd
  4. stat
• Use tools to read files
  1. cat
  2. head/tail
  3. less/more
  4. cmp
• Utilize tools to manipulate the file system
  1. mkdir/rmdir
  2. touch
  3. cp/mv
  4. ln
• Utilize tools to identify and manipulate permissions
  1. chmod
  2. chown/chgrp