Some little-known but interesting Unix/Linux commands (V)

"Some little-known but interesting Unix/Linux commands" series:

1. Some little-known but interesting Unix/Linux commands (1)
2. Some little-known but interesting Unix/Linux commands (2)
3. Some little-known but interesting Unix/Linux commands (3)
4. Some little-known but interesting Unix/Linux commands (4)

This series has been put on hold for a while. Today we will finish the last articleArticle. Hope to help you.

Interesting commands

2. Finger,Query user information, which usually displays the user name, main directory, stagnation time, Logon Time, logon shell, and other information of a user in the system;
4. !!,Repeat the previous command. In addition,!PatternYou can quickly execute commands starting with patttern in commands that have been executed, which is quite convenient and convenient;
6. At,Regular scheduling: You can run a job at a certain interval. You only need to run the job once instead of periodically running it. Use the AT command;
8. WC,Query the number of rows or words in the file;
10. Taskset,Limit the number of CPUs occupied by processes;
12. Tail,The command is used to display the last few lines of the file. The default value is 10. It is generally used to view log files. The latest file content is continuously output based on log updates. You do not need to refresh and view the content. CTRL + C can end the output;
14. Apropos,In Linux, there are powerful help commands other than man. What the Command actually completes is to search the descriptions of other commands and list the relevant commands. Not necessarily, the command is what you want, however, it can help recall useful commands;
16. Nload,Tools used to view network traffic of Linux servers in real time;: I really like nload and iftop to monitor network activity when tcpdump low-levelness is not needed.
18. Find-delete,Find and delete the files that meet the filtering conditions;
20. Watch,Watch can help you monitor the running results of a command, saving you the need to manually run it over and over again;
22. Xxd,Displays an object in hexadecimal format;
24. CTRL + R,Commands executed by reverse search are very powerful! With this, you can discard history;
26. Dmidecode,Dump the DMI (Desktop Management Interface) information of the machine in a readable way. The information includes hardware and bios, which can be used to obtain the current configuration, you can also get the maximum configuration supported by the system;
28. Most,Like the more and less functions, the text viewer;
30. Iptraf,Monitors network traffic, especially when installed on the firewall, and works with iptables to monitor network exceptions that flow through the firewall;
32. Open,You can use the associatedProgramOpen the file;
34. Cowsay,This command can make a cowboy say two humorous sentences. (In view of the comments in the previous article, this command may already be in the ranks of the game. Please note .)
36. Rsync,The software that implements the remote synchronization function, while Synchronizing files, it can maintain additional information such as the permissions, time, and soft and hard links of the original file;
38. Pgrep,A tool that queries a process by program name. It is generally used to determine whether the program is running;
40. YACC,The compiler used to generate the CompilerCodeGenerator );
42. Du,Measure the disk space occupied by directories (or files;
44. Ssh,Used to remotely log on to a Linux host;

Conclusion

This series ends here. Hope to help you. There may be many shortcomings. Please help us to correct them. Thank you!

References

2. Linux Command: User Information and Management-finger
4. Crontab)
6. Linux tips: Use cron and at to schedule jobs
8. Use the taskset command to restrict the CPU of a process
10. Taskset
12. Linux tail commands
14. Tail command details
16. One Linux Command per day tail
18. Apropos: A Powerful HELP command except man in Linux
20. Nload tool for viewing network traffic of Linux servers in real time
22. Nload software for network card Traffic Monitoring in Linux
24. Nload, a real-time monitoring tool for Linux Network Traffic
26. Strange behavior with 'Find-delete'
28. Linux or Unix find and remove files with one find command on fly
30. Summary of watch command usage in Linux
32. Linux watch command usage
34. Watch -- Monitoring command running result
36. Use the tool xxd in Linux
38. Linux xxd hexdump to view the hexadecimal method. It is better to use it with VI.
40. CTRL + R in the Linux Command Line
42. Use Ctrl + R to search for historical commands
44. Dmidecode of Linux commands I used-view hardware information
46. Linux hardware information viewing tool dmidecode
48. Use iptraf in Linux to analyze network traffic
50. Iptraf for Linux real-time network traffic monitoring tool
52. File sync backup from Linux to Linux
54. Linux rsync synchronization settings
56. Linux Study Notes BACKUP command rsync
58. Linux pkill and pgrep commands
60. Linux pgrep Query Process Tool
62. YACC --- a compiler used to generate the compiler on Unix/Linux
64. YACC and Lex Quick Start
66. Usage of DU command parameters in Linux
68. Deep parsing for Linux SSH
70. Use OpenSSH instead of Telnet's zookeeper Method
72. SSH Principle and Application (I): Remote Logon
74. SSH Principle and Application (II): Remote Operations and port forwarding