performance
medium
Apply
harden
2 points
Question 24. CSCD240-E1-C
Recursively change perms under ~/secrets so group and other have no access.
Work the drill
Answer on paper or in a terminal before revealing the ideal answer.
Ideal answer
chmod -R go= ~/secrets
Acceptable alternatives: ["chmod -R 700 ~/secrets", "chmod -R go-rwx ~/secrets"]
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.
chmod go= ~/secrets
Misconception. Missing -R; only top-level dir.
Remedy. -R for recursion.
chmod -R 777 ~/secrets
Misconception. Opposite of request.
Remedy. Chart: 700 vs 777.
Authority mappings
Hover any chip for the mapping justification; click to open the authority record.
DCWF roles:
IT-451 System Administrator
DCWF tasks:
T0136
KU outcomes:
CD-OSC-O4
O*NET tasks:
SOC 15-1212.00: task 6SOC 15-1212.00: task 7SOC 15-1244.00: task 1SOC 15-1244.00: task 2SOC 15-1299.05: task 23SOC 15-1299.05: task 24
NCAE errors:
WWW SSL / failure: Failed to connect to hostSMB Login / failure: SMB operation failed: [Errno.WWW Content / failure: Failed to connect to hostWWW Content / timeout: TimeoutWWW Content / failure: Website cannot be reachedWWW SSL / timeout: TimeoutSSH Login / failure: Failed to connect to host: IPSMB Login / failure: SMB operation failed: [Errno.WWW SSL / failure: [SSL] record layer failure (_s.SMB Login / failure: SMB connection failed: proto.SSH Login / partial: The following users failed t.SSH Login / partial: The following users failed t.
Course-artifact links
Lectures
- CSCD240-S26-L06. Permissions part 2: chmod octal + symbolic, directory x bit
CTF challenges
- 02 Permissions: Apply to Everything