Ubuntu 面试题与答案

问题 26. Explain the purpose of the '/etc/hostname' file.

The '/etc/hostname' file contains the hostname of the system.

问题 27. How do you check the Ubuntu release codename?

You can check the release codename with the command: lsb_release -c

问题 28. What is the purpose of the 'systemctl' command?

The 'systemctl' command is used to control the 'systemd' system and service manager.

Example:

systemctl status serviceName

问题 29. How do you check the CPU information in Ubuntu?

You can check CPU information using the 'lscpu' command.

问题 30. Explain the purpose of the '/var/log' directory.

The '/var/log' directory contains log files generated by various system processes and services.