Help you understand Linux FAQs

Many people begin to learn about Linux systems and are increasingly popular with computer users. As a result, many users may encounter common Linux problems when learning Linux systems, here we will introduce the solutions to common Linux problems, and share them with you here.

1. Briefly describe the advantages of Linux:
A:
Linux is a multi-user multi-task operating system. Each user has specific permissions on his/her own resources and does not affect each other. Each user can also execute multiple programs at the same time, and each program runs independently of each other.
Linux provides users with an intuitive, easy-to-use, and interactive graphical interface. Linux also supports the traditional UNIX text-based command line interface.
Linux has a network function closely integrated with the kernel, providing users with a large number of Internet tools, such as FTP, TELNET, and SLIP. It supports Internet, remote file transmission, and remote access.
Linux is a set of Free Software. Users can not only obtain it free of charge, but also obtain the source code, so they can modify and supplement them as needed. You can modify the kernel source code as needed and add new external devices.
Linux is not only a powerful operating system, but also rich application software, in addition to text editor, office, entertainment and other application software, A complete program development tool is also provided. Linux and its source code can be downloaded from the Internet, and many Linux applications can be downloaded from the Internet. On websites related to Linux, you can find applications and their source code suitable for any special needs.

2. What are Linux requirements for hardware? Is it necessary to install Linux with high configuration?
A:
Linux's Hardware requirements are determined by the service type, service scope, and host role. For example, a Linux computing workstation dedicated to numeric parsing requires a relatively powerful CPU and enough RAM to work. For average users, as long as 586 or even 486 machines, you can run Linux smoothly.

3. Before installing a good host, it is best to plan first. What are precautions for Linux host planning?
A:
First, determine the purpose of the Linux system, and then plan according to the purpose. Are you sure the Linux host provides network services? What network services are provided? Does it support a large number of users? Do you need to perform a large number of operations? Do you need to provide large-capacity hard disks for database and client services ?.

4. What basic hardware does the computer have?
A:
Basic hardware mainly includes CPU, RAM, hard disk, motherboard, optical drive, and input/output interfaces (interface devices such as mouse, keyboard, and printer !) , Display card and network card.

5. What is the graphical interface used in Linux?
The graphic interface used in Linux is X Window (XFree86 ).

6. Write down the device code in Linux in the following configurations:
IDE Hard Drive, CDROM, printer, floppy disk, network card
A:
IDE Hard Drive:/dev/hd [a-d]
CDROM:/dev/cdrom
Printer:/dev/lp [0-2]
Floppy Disk:/dev/fd [0-1]
Network Card:/dev/eth [0-n]

7. What is the device code file name of the first logical partition of the primary partition of IDE2?
/Dev/hdc5

8. How many primary partitions and extended partitions can be used in hard disk partitioning?
There are four primary partitions and four extended partitions. Generally, there is only one extended partition!

9. When partitioning a disk, four primary partitions are set, but the disk still has space. Can I still use these partitions? A: No! Because there are only four primary Disk Partitions at most.

10. In earlier Unix systems, the file name can contain a maximum of 14 characters. In new Unix and Linux systems, how many characters can the file name contain? Answer: 255 characters

11. Which of the following partitions is required for Linux installation?
Root directory/(root)
Virtual Memory Swap

12. Generally, in a 64 MB or 128 mb ram system, how large is the size of swap?
About two times of RAM, that is, 128 MB or 256 MB.

13. The device file name of the NIC, optical drive, and floppy disk )?
/Dev/eth0
/Dev/cdrom
/Dev/fd0

14. What is the default Linux file format?
Ext3

15. Do I have to know the attributes of the display to configure XWindow?
The vertical and horizontal scanning frequency of the monitor.

16. Red Hat Linux supports multiple file types. Common file types and their usage are listed below.
Ext2-supports standard Unix file types and 255 characters long file names)
Ext3-added log support based on ext2, enabling quick recovery of system files after crash.
Software RAID-two or more soft RAID partitions are generated so that you can create RAID devices.
Swap-swap partition is used to support virtual memory.
Vfat-a Linux file system compatible with Windows 95/NT long file name FAT system.

The START loader can be GRUB or LILO. They can be used not only to start Linux, but also to start other systems, such as Windows 9x.
17. When installing Linux and Windows 2000 on the same computer, what sequence should I install and what should I pay attention to when partitioning a disk?
For Windows NT/2000/XP, install Windows first, but do not use the NTFS format for partitions reserved for Linux when creating disk partitions.

18. How to delete Linux
To delete Linux, you only need to run the fdisk command to clear the partitions allocated to Linux. Note that the partitions created in Linux should be deleted using the partition program of Linux. After Linux is deleted, you need to use the Wndiows boot disk to start lilo, and then enter the command fdisk/mbr.

19. How to log out of linux and log on again
To log out of linux and log on again, choose "Main Menu"> "logout", select "logout" in the pop-up dialog box, click "OK", or use the command logout in the command line mode, or press Ctrl + D) to exit the system and re-enter the logon interface.

20. How to disable Red Hat Linux
To disable the Red Hat Linux system, choose Main Menu> logout, select "Shut Down" in the pop-up dialog box, and then click "OK, or use the command shutdown-h now in command line mode to shut down the computer. To restart the Red Hat Linux system, choose "Main Menu"> "logout", select "restart" in the displayed dialog box, and click "OK.

21. How to remotely log on to other Linux systems, for example.
You can use the rlogin command to remotely log on to other Linux systems. For example, to connect to www.bac.gov.cn, you can enter the following command:
# Rlogin www.bac.gov.cn

These are the solutions to common Linux problems.

1. Command Introduction: Basic Linux commands for file and directory management
2. Operation notes: Linux Desktop GNOME Operation Skills
3. Linux File Installation and uninstallation
4. 2010the Linux operating system is about to bloom
5. Practical Operation Log: Install JDK in Linux