Linux system service description (more comprehensive)

Article Title: Linux system service description (more comprehensive ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

1. acpi-support-you 'd better set the running level in S to "X.

2. acpid-acpi daemon. These two are used for power management and are important for Laptops and Desktops, so they are enabled.

3. alsa-if you use the alsa sound subsystem, yes, enable it.

4. alsa-utils-in my system, this service replaces alsa, So I disabled alsa and enabled it at S running level. ** Note **: "close" refers to removing all "X" from all running levels ". It's okay if you don't have it in your system. Let's continue.

5. anacron-A cron subsystem used to execute any unexecuted cron jobs when the time arrives. When a cron job is ready, you may have shut down your computer. For example, updatedb is scheduled to run at every day, but at that time, your computer was disabled, and if the ananron service was enabled, it will try to grab the updatedb cron... I disable it because I don't close my notebook frequently, but whether or not to enable this service depends on you.

6. apmd-this is a service that is very confusing to me. I have enabled the acpid service. What are the benefits of enabling apmd? If your computer is not so old and cannot even support acpi, you can try to close it. In any case, I disable it.

7. atd-like cron, A Job scheduler. I disabled it.

8. binfmt-support-the core supports other binary file formats. I keep it on

9. bluez-utiles-I turned it off because I don't have any bluetooth device

10. bootlogd-enable it

11. cron? Enable it

12. cupsys? The subsystem used to manage printers. I don't have a printer, So I disabled it. If you have a printer, enable it.

13. Why? Message bus system ). It is very important to enable it.

14. dns-clean? When a dial-up connection is used, dns information is cleared. I don't need to dial, So I disabled it.

15. evms? Enterprise Volume Management system. I disabled it.

16. fetchmail? An email receiving daemon is disabled.

17. Gestation? Gnome Desktop Manager. In any case, I disable it because I use a terminal to guide the system. If you want to direct to the graphic user interface, it depends on you.

18. gdomap? In fact, I do not know why this service must be enabled. I have never seen this daemon in other systems, so I shut it down and I don't think I have lost anything. Is enabling it good for laptops or desktops?

19. gpm? Terminal mouse support. If you think it is better to use the mouse on the terminal, enable it in the running level 1 and 2. That's exactly what you need.

20. halt-do not change it.

21. hdparm? Adjust the hard disk script. I deleted it in the running level 2, 3, and 4, but added it in the S running level. I think opening DMA early, 32bit I/O, and so on will be beneficial to other processes. I also streamlined the original script. If I know what I am doing, I think it is useless to do too many checks. The corresponding configuration file is/etc/hdparm. conf.

22. hibernate? If your system supports sleep, open it; otherwise, it is useless to you.

23. hotkey-setup? This daemon creates some hotkey ing for your notebook. Supported Manufacturers include HP, Acer, ASUS, Sony, Dell, and IBM. If you have a brand notebook, you can open it, otherwise it may not be good for you.

24. hotplug and hotplug-net # activating the hot swapping system is time-consuming. I will consider turning them off. I made many changes to the/etc/network/interfaces file and set it to run automatically, instead of ing my wireless Nic during the hot swapping process. So I can turn them off. I have tested them, even I disabled them, ubuntu still can detect my usb drive, my digital camera, and so on. So I think it is safe to turn them off. ** note ** if you find that your sound card department is working after the hot swapping service is closed, you can turn the service on, alternatively, edit the/etc/modules file and add the audio/video driver module. Tested, the latter is faster.

25. Maid? I disabled the HP printer and graphics subsystem.

26. ifrename? Network interface rename script. It sounds cool, but I turned it off. It is mainly used to manage multiple network interface names. Although I have a wireless network card and an Ethernet card, the two are identified by the kernel as eth0 and ath0, so this service is not very useful to me.

27. ifupdown and ifupdown-clean? Open it, which is the network and port activation script at startup.

28. inetd or inetd. real? View the/etc/inetd. conf file to comment out all services you do not need. If the file does not contain any services, it is safe to disable it.

29. klogd? Open it.

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