When would you not want to use the nice command?

• A. When you want to permanently lower a process priority.
• B. When the command is a quick, non-interactive task.
• C. When the job is running in the foreground or when you created an interactive job.
• D. When running a background daemon.

Answer: (C)

Niceness controls how much CPU time a process gets by adjusting its scheduling priority. Lower niceness means higher priority; higher niceness means the process yields CPU time to others.

You wouldn’t use the nice command for a job running in the foreground or an interactive session because you want quick, responsive feedback. Applying a higher niceness would slow down your own interaction, so it’s best to skip nice in that scenario. In contrast, nice is most helpful for long-running background tasks, where you want to share CPU time fairly with other processes.