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terminal

You want to rerun that long command from a minute ago.

What's the simplest way?

Press the up-arrow (↑) key to recall previous commands
↑ walks back through your command history; 'history' lists it all, and Ctrl+R searches it. Never typing the same thing twice is a terminal virtue.
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terminal

What does the asterisk (*) do?Which symbol does that?Which one is it?What does a program like brew (Homebrew) actually do?What's the actual way to quit the terminal editor vim without saving?'Run the backup script at 3 a.m. every day' — which venerable Linux scheduler has handled jobs like this for decades?Which environment variable holds the list of folders the computer searches for commands?What's this feature called?Which command follows a file's tail and shows each new line as it arrives?Which command is the terminal's task manager, showing processes with live CPU and memory usage?What is it short for?The 'Hello World' of shell scripting, and the command you reach for whenever you need to check a variable's value?

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