Accessing System and Understanding Essential Tools Objectives :- Accessing the command line and run simple commands using shell. Configuring SSH Key-based Authentication Understand and use essential tools Index Topic Covered 1 Introduction to the bash shell. Shell BasicsTypes of Shells Default Shell in LinuxSwitching between Shells 2 Logging in to Local ComputerVirtual ConsolesLogging in over network 3 SSH Key-based AuthenticationGenerating SSH Keys using ssh keygen commandAccess remote system using SSH 4 Use grep and regular expressions to analyze text Log in and switch user in multiuser targetCreate hard and soft links use system documetation including man, info,help