Linux Command summary, linux Command

Linux Command summary, linux Command

• 1 vi Editor
• 2 file operations
  • 2.1 Delete an object
  • 2.2 view files
  • 2.3 create a folder
  • 2.4 View File Permissions
  • 2.5 copy a file
  • 2.6 Mobile
  • 2.7 search for files
• 3. View cpu Information
• 4. Process Management
• 5. View logs
• 6. compression and decompression
• 7 network
  • 7.1 Network Configuration
  • 7.2 Network Management netstat command
• 8. view disk io
• 9 users
• 10 Service Management
• 11 Process Management
• 12 restart and Shutdown
• 13 CPU and memory usage monitoring
• 14 install Ubuntu
• 15 common tools
  • 15.1 Nano Editor
  • 15.2 install OPENSSL Server
  • 15.3 Telnet
  • 15.4 wget
• 16 languages

1 vi Editor

Operation description

Exit the command and enter:

Press esc to Enter command mode

Exit command q

Exit and do not save q!

Save and exit wq

Input

A. Enter characters after the cursor position

I input characters before the cursor position

Delete

Dd deletes a row.

X Delete selected characters

Line feed

O add a line under the row where the cursor is located and enter the input mode

O add a line above the row where the cursor is located and enter the input mode

Search

Command mode input/content to be searched

Dd deletes a row

Ndd Delete n rows

U undo

Yy copy the current row

P Paste

Reference: http://man.ddvip.com/soft/vieditor/vi.html

2. File Operation 2.1 Delete an object

Delete rm [filename]

Delete the rm-rf [directory] folder

Delete an empty folder rm-d [directory]

2.2 view files

All files in the ls folder

Find-name [filename]: find the file named filename in the current directory.

Find/-name [filename] find all files named filename in the root directory

2.3 create a folder

Mkdir-p xx/xxx/xx

2.4 View File Permissions

Ls-l [file name]

2.5 copy a file

Cp-r [absolute file path src] [absolute file path dest]

Remote replication

Scp./* .tar.gz root@192.168.1.202:/home/mysql/

2.6 Mobile

Mv/home/bruce/tomcat/apache-tomcat-7.0.41/usr/local/webserver/apache-tomcat-7.0.41

2.7 search for files

Whereis xx

Find/-name xx

3. View CPU Information

View the number of physical CPUs

Grep 'physical id'/proc/cpuinfo | sort-u | wc-l

View the number of cores

Grep 'core id'/proc/cpuinfo | sort-u | wc-l

View the number of threads

Grep 'processor '/proc/cpuinfo | sort-u | wc-l

View cpu Information

Cat/proc/cpuinfo

4. Process Management

Kill Process

Reference: http:// OS .51cto.com/art/200910/158639.htm

Kill [pid]

Kill-9 [pid]

Query Process commands

Ps-ef | grep java

5. View logs

1) dynamically view logs:

Tail-f 1000 xx. log

2) more command:

More xx. log

3) less command:

Less xx. log

4) vi command:

Vi xx. log

6. compression and decompression

Unpack

Tar xvf xx.gz

Package

Tar-cf a.txt.tar a.txt

Zip Compression

Zip-q-r html.zip/home/Blinux/html

7. Network 7.1 Network Configuration

CentOS Configuration

Modify ip Address

Nano/etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0BOOTPROTO=staticONBOOT=yesIPADDR=192.168.1.200NETMASK=255.255.255.0GATEWAY=192.168.1.1DNS=202.96.209.133

 

Restart the network

Service network restart

Ubuntu Configuration

1) set the connection mode of virtual machines to bridging

2) Change the ip address

Vi/etc/network/interfaces

Add the following content to interfaces:

auto eth0iface eth0 inet staticaddress 192.168.2.205netmask 255.255.255.0gateway 192.168.2.1

Edit/etc/resolv. conf

Add DNS server address:

Nameserver 8.8.8.8

In this way, the domain name can be resolved

Then restart the networking service:

Sudo/etc/init. d/networking restart

Reference

Http://blog.istef.info/2008/10/02/setup-ssh-server-on-ubuntu-server/

7.2 Network Management netstat command

View port

Netstat-anp | grep 80

8. view disk io

Reference:

Http://blog.csdn.net/qiudakun/article/details/4699587

Software installation:

Yum install sysstat

Run commands

Iostat-x 1 10

9 users

Ubuntu:

Switch from user to root user

Sudo su

Switch from root user to user

Su user

CentOS:

Switch to the root user

Su-root

Note: there is a space between-root and-root.

10 Service Management

View and disable services

Http://www.360doc.com/content/11/0111/13/3220382_85706376.shtml

Sudo apt-get install sysv-rc-conf

Sudo sysv-rc-conf

Operation:

• Use the keyboard arrow key to locate
• Select with Space
• X indicates that the service is enabled.
• Ctrl + N next page
• Ctrl + P Previous Page
• Q exit

11 Process Management

Kill Process

Reference: http:// OS .51cto.com/art/200910/158639.htm

Kill [pid]

Kill-9 [pid]

12 restart and Shutdown

Restart command:
1. reboot
2. shutdown-r now restarts immediately (used by the root user)
3. shutdown-r restarts automatically after 10 minutes (used by root users)
4. shutdown-r restart at (for root users)
If you use the shutdown command to set the restart, you can use the shutdown-c command to cancel the restart.

Shutdown command:
1. Shut down halt immediately
2. Power off immediately
3. shutdown-h now shut down immediately (used by the root user)
4. shutdown-h: shutdown automatically 10 minutes later

If you use the shutdown command to set shutdown, you can use the shutdown-c command to cancel the restart.

13 CPU and memory usage monitoring

Top: view the running status of the current process

Free: view memory usage

Exit: q

14 install Ubuntu

Install Ubuntu on a VM

Download the server version Ubuntu server 13.04 from the official website

: Http://www.ubuntu.org.cn/download/server

15 common tools: 15.1 Nano Editor

Reference: http://www.linode.im/1277.html

Nano xxx

Ctrl + x: Exit

15.2 install OPENSSL Server

Server:

Sudo apt-get install openssh-server

Configuration File

View port information. The default port is 22.

Sudo nano/etc/ssh/sshd_config

Start command

Start sudo/etc/init. d/ssh start

Sudo/etc/init. d/ssh stop

Restart sudo/etc/init. d/ssh restart

View ssh running status

Netstat-tlp

Client:

15.3 Telnet

Centos, ubuntu

Yum list telnet * view the installation package related to telnet

Yum install telnet-server install telnet Service

Yum install telnet. * install the telnet Client

15.4 wget

Yum-y install wget

16. Language

Export LANG = en_US