Defining an interactive shortcut | LinuC Level 1 102 Exam original practice question

1.06.1Basic

In the current interactive Bash, make ll expand to ls -alF.

Which command is appropriate?

Hint 1: Focus on shell scope

Separate login and non-login shells, interactive behavior, current-shell changes, and command expansion before comparing the choices.

Hint 2: Key terms

Review the short definitions of the shell files, process boundaries, and expansion rules involved.

alias: A definition that expands a command name to another string in an interactive shell.
Alias expansion: Replacement of a command's leading word before the shell executes it.
export: An operation that makes variables or functions available to child processes.
set: A shell builtin for positional parameters and shell options, among other state.
source: A builtin that reads and executes a file in the current shell.

Detailed explanation

Correctalias ll='ls -alF'

Correct. This defines ll as an alias for ls -alF.

Incorrectexport ll='ls -alF'

Incorrect. export creates an environment variable, not an alias.

Incorrectset ll='ls -alF'

Incorrect. This is not valid Bash alias syntax.

Incorrectsource ll='ls -alF'

Incorrect. source reads a file rather than defining an alias this way.

An example you can run in a temporary verification environment.

bash --noprofile --norc -ic "alias ll='printf alias-ok\\n'; ll"

alias-ok

Foundation review

A shell definition that expands a command name to another string for interactive input.

Replacement of a command's leading word before the shell executes it.

Variables, functions, aliases, and options are separate kinds of shell state.

Question IDKL-102-907

EnvironmentGNU Bash 5.2 / 一時対話シェル

Last technical review2026-08-13

More practice in this area