Bird Brother Linux Private cuisine Knowledge points Summary 3 to 5 chapters

Feel yourself Right Linux understanding has not been enough, so recently turned to read a "Brother Bird's Linux Private Cuisine ". This is a basic book, the lofty high-rise floor, will not much but can learn. This is some of my knowledge points, albeit very basic. Hope to share with you.

Chapter 3 host planning and disk partitioning

1.3D computer games need 3D lightand shadow operation.

2, in the Linux System. Each device is treated as a file .

3, the entire boot process to the operating system before the action:

(1) BIOS: The boot active firmware will recognize the first device that can be powered on.

(2) MBR : The primary boot partition block in the first sector that can be opened and the device, including a boot loader.

(3) Boot loader: a software that can read kernel files to run

(4) kernel files : Start operating system features

4, the so-called mount, is to use a folder as the entry point. Place the data for the disk partition under the folder.

^ (*￣(oo)￣) ^ This chapter is about installing Linux for sector allocation.

Chapter 4 installation of CentOs 5.x and multi-boot tips

^ (*￣(oo)￣) ^ I think this part is my practice. Can be installed

5th Chapter first landing and online Help man page

^ (*￣(oo)￣) ^ This chapter is just to tell our friends. After the CentOs installation , there is something inside.

The first input data is definitely a command or a executable file.

Second, write off the Linux with exit This command ( leaving the system is not shutdown )

Three, display the date and time of the command:date

Date +%y/%m/%d

Iv. commands for displaying calendars:cal

To list the current month, direct cat is available .

Or cat ten , so you know The calendar for the year month.

Five, easy to use calculator:BC

This plus +, minus -, multiply *. Except /. Index ^, remainder %

Six, [Tab] after the first command of a series of commands, then "command completion"

[Tab] "File Completion" after the second command of a sequence of commands

⑦, there is no syntax format . Ability to query with man

⑧, there are old many help files are under the /usr/share/doc folder

⑨, query system usage Status:

Want to see who's online right now. Available who

Want to see the network status, available netstat-a

Want to see the background run the program, available Ps-aux

Ten, the various forms of shutdown :

Eg:

Shutdown- H +10 system shuts itself down after 10 minutes

Shutdown- R +30 ' the system would reboor '

The system restarts after 30 minutes and displays the following message to all online users

Shutdown- k now ' this systemn'll reboot '

Only the parameters of the warning letter are issued. The system does not turn off the computer

Xi.The steps after forgetting rootPassword:

① system reboot. Press the random key while reading the second and press e to enter the grub edit mode

② move the cursor to the Kernerl line and press e once to enter the kernel edit screen. In the last place enter single

③ press [Enter]. Press the b key to be able to boot into the single-user maintenance mode

④ then passwd the last reboot to be settled.

12, manpage ,1 represents the general account available commands. 8 commands are often used on behalf of system administrators. 5 for system configuration file format

Finally, I like the sentence:

Learn to be thankful for what you have, and you'll finally get a lot of other things. Suppose you're always brooding over what you don't get. Then you will never be satisfied. Presumably, not happy either.

Bird Brother Linux Private cuisine Knowledge points Summary 3 to 5 chapters