Run type cd.
type cd
Compare shell builtins with commands found on PATH.
Terminal basicstypewhich
Click any instruction for the command details, the why, and the common mistake to avoid.
Run type cd.
type cd
Run type ls.
type ls
Run which ls.
which ls
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Build repeatable confidence with distinguishing shell builtins from executable commands.
Start with type cd, inspect the result, then continue in order.
Distinguishing shell builtins from executable commands helps operators explain what they know before they change anything.
which <command>
Locate command paths.
type <command>
Explain whether a command is built in or found on the simulated PATH.