Some common operation commands under Linux

1, two server SSH free of authorization:

Ssh-keygen-t RSA always return to the end
Ssh-copy-id-i/root/.ssh/id_rsa.pub Remote IP and enter the remote IP password

You don't have to verify your password for future visits.

2. Compression and Decompression commands:

. tar
Unpacking: Tar zxvf Filename.tar
Package: Tar czvf filename.tar DirName
---------------------------------------------
. gz
Decompression 1:gunzip filename.gz
Decompression 2:gzip-d filename.gz
Compression: gzip FileName
. tar.gz and. tgz
Decompression: Tar zxvf FileName.tar.gz
Compression: Tar zcvf FileName.tar.gz DirName
---------------------------------------------
. bz2
Decompression 1:bzip2-d filename.bz2
Decompression 2:BUNZIP2 filename.bz2
Compression: Bzip2-z FileName
. tar.bz2
Decompression: Tar jxvf FileName.tar.bz2
Compression: Tar jcvf FileName.tar.bz2 DirName
---------------------------------------------
. BZ
Decompression 1:bzip2-d filename.bz
Decompression 2:BUNZIP2 filename.bz
Compression: Unknown
. tar.bz
Decompression: Tar jxvf FileName.tar.bz
Compression: Unknown
---------------------------------------------
. Z
Decompression: uncompress filename.z
Compression: Compress FileName
. Tar. Z
Decompression: Tar zxvf filename.tar.z
Compression: Tar zcvf filename.tar.z DirName
---------------------------------------------
. zip
Decompression: Unzip Filename.zip
Compression: Zip Filename.zip DirName
---------------------------------------------
. rar
Decompression: rar a Filename.rar
Compression: R ar e filename.rar

3. Firewall Port Release

Vim/etc/sysconfig/iptables

At-a input-j REJECT--reject-with icmp-host-prohibited
-A forward-j REJECT--reject-with icmp-host-prohibited
Commit before you add the following line:

-A input-p tcp-m multiport--dports Port, Port-m state--state New-j ACCEPT

Save exit perform service iptables restart restart firewall

4. Network Card DNS Configuration

cd/etc/sysconfig/network-scripts/
VI ifcfg-eth0 plus DNS configuration can
And then restart
Service Network restart

5. Network Card IP Configuration

IP-A View all network cards
CP Ifcfg-eth0 Ifcfg-eth1 from the existing copy one past
Vim ifcfg-eth1 Edit Device,ip address, mask, etc information
Ifup eth1 Start
Ifdown eth1 off

Some common operation commands under Linux