LFCS Question #305: Real Exam Question with Answer & Explanation

Question

Which of the following benefits does an alias provide?

Options

• AIt provides faster lookups for commands.
• BIt prevents having to type long commands
• CIt hides from others the command that is being run.
• DIt creates a local copy of a file from another directory.

Explanation

An alias provides a shorter, custom name for a longer command or sequence of commands, primarily benefiting users by reducing typing effort.

Common mistakes.

• A. Aliases do not provide faster lookups; they are simply text substitutions performed by the shell before command execution.
• C. Aliases do not hide commands from others; they are typically configured in shell startup files and can be easily viewed or shared.
• D. Creating a local copy of a file from another directory is the function of commands like cp or rsync, not aliases.

Concept tested. Shell aliases utility

Reference. https://man7.org/linux/man-pages/man1/bash.1.html

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