Linux Operations Summary

• 1 VI Editor
• 2 File operations
  • 2.1 Deleting files
  • 2.2 Viewing files
  • 2.3 Creating a Folder
  • 2.4 Viewing file permissions
  • 2.5 Copying files
  • 2.6 Mobile
• 3 Viewing CPU Information
• 4 Query Process commands
• 5 Viewing logs
• 6 Compression and decompression

1 VI Editor

Operation description

Exit command, enter:

Press ESC to enter command mode

Exit Command Q

Exit does not save q!

Save Exit Wq

Input

A enter a character after the cursor position

I enter characters before the cursor position

Delete

DD Delete Row

X Delete the selected characters

Line break

O Add a row below the cursor line and enter the input mode

O Add a row above the cursor line and enter the input mode

Find

Command mode input/what to look for

DD Delete a row

NDD Delete N rows

U undo

YY copy when moving forward

P Paste

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

2 File Operations 2.1 deleting files

Delete file rm [filename]

Delete a folder Rm-rf [directory]

Delete empty folders rm–d [directory]

2.2 Viewing files

All files under the LS folder

find–name [filename] Find file named filename in the current directory

Find/-name [filename] finds all files under the root directory named filename

2.3 Creating a Folder

Mkdir–p xx/xxx/xx

2.4 Viewing file permissions

ls–l [file name]

2.5 Copying files

cp-r [File Absolute path src] [file absolute path dest]

Remote replication

SCP./*.tar.gz [Email protected]:/home/mysql/

2.6 Mobile

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

3 Viewing CPU Information

To view the number of physical CPUs

grep ' physical id '/proc/cpuinfo | Sort-u | Wc-l

View number of cores

grep ' core ID '/proc/cpuinfo | sort-u| Wc-l

To view the number of threads

grep ' Processor '/proc/cpuinfo | Sort-u | Wc-l

View CPU Information

Cat/proc/cpuinfo

4 Query Process commands

Ps-ef|grep Java

5 Viewing logs

Tail-f Xx.log

More Xx.log

Less Xx.log

VI Xx.log

6 Compression and decompression

Unpack

Tar xvf xx.gz

Packaged

TAR-CF A.txt.tar A.txt

Compress zip

Zip–q–r html.zip/home/blinux/html

7 Viewing port occupancy

Netstat-anp|grep 80

8 wget Tool Installation

Yum-y Install wget

9 Finding files

Whereis XX

Find/-name XX

10 Network configuration

CentOS Configuration

Modify IP

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

device=Eth0bootproto=staticonboot=yesipaddr=192.168. 1.200 NETMASK=255.255. 255.0 GATEWAY=192.168. 1.1 DNS=202.96. 209.133

Restart Network

Service Network restart

Ubuntu configuration

1) Set the virtual machine networking mode to bridge

2) Change IP

Vi/etc/network/interfaces

In interfaces, add the following:

192.168. 2.205  255.255. 255.0  192.168. 2.1

Edit/etc/resolv.conf

Add DNS server address:

NameServer 8.8.8.8

This will resolve the domain name

When you are finished, restart the networking service:

sudo/etc/init.d/networking restart

Reference

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

Linux Operations Summary