Defining an alias for a long command | LPIC-1 102-500 Exam original practice question

105.1Standard

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

Which command is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

function ll=ls -alF: Incorrect. This is not valid Bash function syntax.
export ll='ls -alF': Incorrect. export creates an environment variable, not a command alias.
alias ll='ls -alF': Correct. It defines ll as an alias for ls -alF.
set ll='ls -alF': Incorrect. set does not define aliases.

Detailed explanation

Incorrectfunction ll=ls -alF

Incorrect. This is not valid Bash function syntax.

Incorrectexport ll='ls -alF'

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

Correctalias ll='ls -alF'

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

Incorrectset ll='ls -alF'

Incorrect. set does not define aliases.

An example you can run in a temporary verification environment.

bash --noprofile --norc -ic "alias ll='printf alias-ok'; alias ll" 2>/dev/null

alias ll='printf alias-ok'

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKP-105-610

EnvironmentGNU Bash 5.2 / 一時対話シェル

Last technical review2026-08-13