In the operation and maintenance of Linux systems, mastering efficient command operations is a fundamental requirement for every network security professional. A simple combination of commands can often automate cumbersome processes, significantly improving work efficiency. Today, I will share 20 frequently used Linux commands based on my daily work. These commands cover various aspects such as file management, process control, system monitoring, and text processing, and I will provide examples to better assist operational tasks.
1. cd – Change directory
2. ls – List directory contents
3. pwd – Print working directory
4. cp – Copy files
5. mv – Move or rename files
6. rm – Remove files
7. find – Find files
8. grep – Search file contents
9. ps – View processes
10. top/htop – System monitoring
11. kill – Terminate processes
12. killall – Terminate by process name
13. echo – Print content
14. cat – Display file contents
15. less – View in pages
16. du – Check directory size
17. df – Check disk usage
18. tar – Archive files
19. ping – Test network connection
20. scp – Remote file transfer
By mastering these efficient commands, I have saved a lot of time in daily operations and can more confidently tackle complex system issues. In the world of operations, there are no “excess commands”, only flexible combinations. These 20 commands are fundamental yet powerful; once you integrate them, you will be able to efficiently solve multiple tasks from file management to system optimization. Remember, each command should be used in conjunction with actual needs to achieve goals faster and more accurately.
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