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This article mainly explains "what are the Ubuntu skills". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's ideas to study and learn "what are the Ubuntu skills"?

View the physical address of the current network card

Sudo arp-a | awk'{print $4}'

Sudo ifconfig eth0 | head-1 | awk'{print $5}'

Let the network support nat now

Sudo echo 1 > / proc/sys/net/ipv4/ip_forward

Sudo iptables-t nat-I POSTROUTING-j MASQUERADE

View routing information netstat-rn:sudo route-n

Manually add and delete a route

Sudo route add-net 192.168.0.0

Netmask 255.255.255.0 gw 172.16.0.1

Sudo route del-net 192.168.0.0

Netmask 255.255.255.0 gw 172.16.0.1

The method of modifying the MAC address of Network Card

Sudo ifconfig eth0 down # turn off the network card

Sudo ifconfig eth0 hw ether 00:AA:BB:CC:DD:EE # and then change the address

Sudo ifconfig eth0 up # and then start the network card

Add a service sudo update-rc.d service name defaults 99

Delete a service: sudo update-rc.d service name remove

Temporarily restart a service: / etc/init.d/ service name restart

Temporarily shut down a service: / etc/init.d/ service name stop

Configure which sudo update-alternatives is used by the default Java-- config java

Modify user profile: sudo chfn userid

Set up a proxy for apt: export http_proxy= http://xx.xx.xx.xx:xxx

Modify system login information: sudo vim / etc/motd

Convert the file name from GBK to UTF8:sudo apt-get install convmv convmv-r-f cp936-t utf8-- notest-- nosmart *

Quickly find a file: whereis filename find directory-name file name

View file type: file filename

Display the contents of the last 6 lines of the xxx file: tail-n 6 xxx

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