IntroToLinux

Review Questions

1. What does the permission 755 mean in octal notation?
2. How do you make a directory where all new files inherit the group ownership?
3. What’s the difference between chmod 644 and chmod u+rw,g+r,o+r?
4. How do you find all files larger than 100MB in your home directory?
5. What does the sticky bit do and where is it commonly used?
6. How does umask affect new file permissions?

7. What’s the security implication of SUID files?

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