performance easy Apply alias 2 points

Question 25. CSCD240-E1-A

Create alias ll for long listing with human-readable file sizes.

Work the drill

Answer on paper or in a terminal before revealing the ideal answer.

Ideal answer

alias ll='ls -lah'

Acceptable alternatives: ["alias ll=\"ls -lah\"", "alias ll='ls -l -a -h'"]

Misconception bank

Each row below is a plausible wrong answer, the thinking that produces it, and the remedy that corrects the misconception. These are the foundation of the multiple-choice framing and the targeted feedback a student receives after answering.

alias ll = 'ls -lah'

Misconception. Whitespace around = is invalid in bash.

Remedy. Reinforce: NO spaces around = in any bash assignment.

alias ll='ls -l'

Misconception. Missing -a and -h; partial credit.

Remedy. Accept with deduction; note hidden files flag not included.

Authority mappings

Hover any chip for the mapping justification; click to open the authority record.

DCWF roles: IT-451 System Administrator

DCWF tasks: T0063

KU outcomes: CD-BSP-O1 CO-M5-O2

O*NET tasks: SOC 15-1244.00: task 1 SOC 15-1244.00: task 2

NCAE errors: SSH Login / failure: Failed to connect to host: IPSSH Login / partial: The following users failed t.SSH Login / partial: The following users failed t.

Course-artifact links

Lectures

CSCD240-S26-L07. I/O redirection, aliases, source, .bashrc, env

Lab questions

CSCD240-S26-LAB4: alias ll='ls -la'. Add it to ~/.bashrc. Show source ~/.bashrc.

CTF challenges

04 Environment & Patterns: Shortcut Maker