Raspberry Pi - Security and Deployment
Find the bug in this shell script snippet intended to disable SSH on Raspberry Pi:
```bash
if [ $disable_ssh = true ]
then
systemctl stop ssh
fi
```
Find the bug in this shell script snippet intended to disable SSH on Raspberry Pi: ```bash if [ $disable_ssh = true ] then systemctl stop ssh fi ```
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Check shell variable usage
Variables should be quoted to avoid errors if empty or containing spaces.Step 2: Verify other syntax elements
Semicolon is optional before then; 'systemctl stop ssh' is correct; 'fi' is present.Final Answer:
Variable $disable_ssh is not quoted -> Option BQuick Check:
Shell bug = Unquoted variable [OK]
Quick Trick: Quote variables in shell scripts to avoid errors [OK]
Common Mistakes:
MISTAKES- Forgetting quotes around variables
- Adding unnecessary semicolons
- Using wrong commands to stop services
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