Redhat-linux knowledge

1. What are the features of the Linux kernel version?

Version: 2.6.18-348. e15

2 is the primary version number, 6 is the version number, and when the minor version number is an odd number, it is the Development Board, the even number is the stable version, 18 is the revision number, and 348-e45 is the Red Hat revision number.

2. How does one express a Linux disk?

/Dev/XdYZ

/Dev indicates a Device directory, Xd indicates the disk type, H indicates the IDE disk, S indicates the SATA disk, non-IDE disk, Y indicates the first disk, a indicates the first disk, and so on, Z indicates the first partition, where 1-4 is the primary partition, 5 is the first logical partition, and so on.

3. What are the functions of common Linux directory structures?

/-Root partition;/media-mount point;/bin-command for common users;/sbin-command for administrator;/home-home directory for common users; /root-administrator's home directory;/dev-device file, keyboard, mouse;/etc-configuration file;/var/log-storage log file;/tmp-Temporary Folder.

4. What is the role of lvm?

Logically, multiple physical partitions/disks are grouped into a larger whole, and different logical partitions are divided. The size of logical partitions can be expanded and reduced as needed.

5. What is the Linux Startup Process? Host power-on self-check, load BIOS hard disk information-read MBR512 bytes) boot file grub, lilo)-boot Linux kernel-run the first process init process number is always 1) -Enter the corresponding running level-running Terminal, and enter the user name and password.