Linux Shell Basics: Login Shells and Shell Access
What is a Shell? Shell = command interpreter program that provides an interactive environment for running commands. Common shells: /bin/bash - Bourne Again Shell (most common) /bin/sh - Bourne Shell (POSIX standard) /bin/zsh - Z Shell /bin/dash - Debian Almquist Shell What shells do: Provide interactive prompt for typing commands Interpret and execute commands Run other programs Handle scripting with shell syntax Manage environment (variables, paths, job control) Understanding /etc/passwd /etc/passwd = file containing user account information ...