- Which filesystem is used by modern operating systems?
- What is an inode? What is inode 0 in Unix?
- What's the difference between PID and PPID?
- How do you terminate a process running in the background?
- What is the difference between user and group?
- What's the scope of the Unix permission model?
- Can you explain the difference between signals and exit codes?
- What's a swap file?
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