short_answer
easy
Remember
history
2 points
Question 44. CSCD240-E1-A
Bash keystroke that begins reverse-incremental history search.
Work the drill
Answer on paper or in a terminal before revealing the ideal answer.
Ideal answer
Ctrl+R
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.
Ctrl+H
Misconception. Ctrl+H is backspace in many terminals.
Remedy. Flash card: R for Reverse history search.
Ctrl+F
Misconception. Forward search exists via Ctrl+S but reverse is Ctrl+R.
Remedy. Ctrl+R = reverse; Ctrl+S = forward (after stty -ixon).
Authority mappings
Hover any chip for the mapping justification; click to open the authority record.
DCWF roles:
IT-411 Technical Support Specialist
DCWF tasks:
T0295
KU outcomes:
CD-BSP-O1
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-L04. Command history, man pages, help system, history file
Lab questions
- CSCD240-S26-LAB2: Use Ctrl-R to search history.
CTF challenges
- 01 Shell & Help: Search Your Past