Delete the directory:
Absolute path beginning with "/" follow after the start of the root directory or home directory
After you remove will not be dumpster
The top of the tree '.' Represents the current directory
With the mv command to rename an existing file
The more keyword-time can not be displayed, you can also press the spacebar to see the next
ping target ip address
When you press Enter after entering this opportunity to send data target a certain size, in which case the opportunity to return to the target packet native of a certain size, and this process will not stop, back and forth every time once again time statistics, To be the time to stop, you must enter "ctrl + c key"
The above example, 56bytes data size of the machine is sent to the target, the target 64 is returned size
window is also the need to install a computer SSh client, and do not need Linuxs
Because the domain name is an alias IP address, so we can keep up with the domain name after the ping
And the post-test from the back of the IP address is www.baidu.com
In our daily network access, we find the computer server by IP address, and then find the above computer software by port number, if we do not enter the port number, it will take the default port number
When the input port number wrong will not appear on the correct page
Demo:
When not enough authority, when in front of the command followed by a sudo ---> super user, you can perform the
Client with the private key to encrypt data transmitted to the server using the public key can decrypt the server, the client encrypts the data to be transmitted to the public key, and the client can then decrypt the private key
Write this in the config file, where Host is the alias for him it's you
