Linux Command class library mechanism and common command _ command drill, linux class library
Do not memorize the commands. Here I will list some frequently-used commands for the purpose of remembering them later. I can't afford to go online.
I. file system and related operations
1. ls-a; ls-l; ls al
2. cat
3. man ls or... ls -- help
4. cd
5. pwd
6. file
7. echo
8. mkdir/rmdir
9. cat
10. cp, mv, rm (rm-r)
11. chown, chgrp
12. chmod
13. grep
14. find
15. locate
16. ln
17. gzip
18. tar
19. diff
20. patch
Ii. disk management
1. df
2. du
3. fdisk
4. mkfs
5. mount/umount
Iii. User Management
1. useradd
2. usermod
3. userdel
4. groupadd
5. groupmod
6. groupdel
7. passwd
8. id
9. who
10. whoami
Iv. Systems and others
1. su
2. sudo
3. export
4. shutdown/poweroff
5. ps
6. top
7. uname
8. uptime
9. clear
10. cal
11. date/time
V. Network Configuration Management
1. netstat
2. nslookup
3. finger
4. ping
5. ipconfig
6. ftp
7. telnet
8. ssh
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