In a simple shell, you can use basic commands such as:
whoami: Displays the current user.lsb_release -a: Shows information about the Linux distribution.cd: Change directory.pwd: Print the current working directory.mkdir: Create a new directory.rm: Remove files or directories.cp: Copy files or directories.mv: Move or rename files or directories.echo: Display a line of text or a variable value.cat: Concatenate and display file content.
Keep in mind that a simple shell may lack features like command prompts, tab completion, and interactive commands like su or ssh.
