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Excerpt from---and learn about Linux video courses (if found wrong welcome the gods to point out, thank you)

The experimental system is CentOS 6.5

Setting up a Linux DNS address

Editing a configuration file/etc/resolv.conf

Add nameserver DNS address 1 to the file

NameServer DNS Address 2

Modify Linux boot entry

Editing a configuration file/boot/grub/grub.conf

Default = 0---Defaults to TITLE0, can be changed to Title1, title2, etc.

The experiment was due to a WIN7 on his computer. So the title entry in the grub.conf configuration file is displayed as:

Title 0 CentOS

Root

Kernel

1 Other---Other systems, this refers to WIN7

Configuring the Init startup level, such as the default system startup command line mode, does not start graphics mode

Editing a configuration file/etc/inittab

The file has the following content:

0 Halt---Shutdown

1 Single---One-user mode

2 Multiuser NFS---command-line mode with NFS

3 Full multiuser Mode---All command-line modes

4 Unused---system reserved

5 X11---graphical mode

6 Reboot---Restart

Id:3:initdefault:---Modify the number in the middle of this line to modify the default startup item here is the default boot 3 full command line mode

How to install Linux components and list the components that Yum can install

Yum Grouplist | Less---Lists the list of installable components and displays them in less

Yum Groupinstall "Component Name"---install the corresponding component

CTRL + L = Clear Screen Ctrl + C = End Current Program Ctrl + D = Exit Current Terminal Ctrl + Z = Pause Current Program

Press CTRL + S to lock the screen while in the brush screen press CTRL + Q to unlock the screen

Jobs---View running tasks and IDs

FG ID---Programs that have the corresponding ID paused continue to run

echo $LANG---Querying the current system language

/bin/sbin/usr/bin/usr/sbin---These four directories where binary files hold commands

/Boot---Store startup-related files, micro-memory system, equivalent to Windows C-drive

/dev---device files such as disks, etc.

/etc---The directory where the system configuration files are located

/Home---Common User House Directory

/lib---Store files such as dynamic link libraries

/usr/local---Store user installation tools and programs

UNAME-A---Viewable system is 32-bit or 64-bit system

Less/proc/cpuinfo---Use less to view CPU information

The processor in the file refers to the core number of the CPU, and the physical ID refers to how many physical CPUs

Less/proc/meminfo---Use less to view memory information

Update in ...

This article is from the "confused It Boys" blog, please be sure to keep this source http://mimangitboy.blog.51cto.com/4487103/1649850

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