Quration AIQ

terminal

Sometimes a freshly installed program simply refuses to run, and the computer insists it has no idea what you're talking about.

Which environment variable holds the list of folders the computer searches for commands?

PATH
PATH lists the directories searched for executables. Most 'command not found' errors mean the program exists but isn't on PATH — the classic culprit in dev-environment setup.
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terminal

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?Where does 'cd ~' take you?What's the fundamental key combination to interrupt it?What's this file, saved with a .sh extension, called?What's this approach called, in contrast to the icon-clicking GUI?What is it?Which terminal command — probably the most-typed two letters in computing history — answers 'what's in this folder?'What does it stand for?

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