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The Linux CLI is a text-based interface for interacting with the operating system using commands entered via a terminal emulator, allowing users to perform tasks efficiently without a graphical user interface.
A shell is a program that interprets commands entered into the CLI, processes them, and communicates with the kernel; common shells include Bash (Bourne Again SHell), the default on most distributions.
Use keyboard shortcuts like Ctrl+Alt+T on Ubuntu or search for 'Terminal' in the applications menu; it launches a shell session for command execution.
pwd command do?The pwd (Print Working Directory) command displays the absolute path of the current working directory, helping users confirm their location in the filesystem.
ls lists files and directories; add flags like -l for detailed view, -a to show hidden files, or -h for human-readable sizes.