Directory Creation, Access and Structure

Ø  mkdir directoryName -: to create a directory
Ø  cd /directoryName -: access to a directory from root
Ø  cd directoryName -: access to a directory from a directory
Ø  cd .. -: goes to the parent directory
Ø  cd // -: goes to the root
Ø  pwd -: present working directory
Ø  ls -: lists the files and directories according to the ascending order
Ø  ls -r -: lists the files and directories according to the descending order
Ø  ls -l -: lists the files and directories with details
Ø  tree -: tree structure of a directory