First, the multi-command execution order
&& || equivalent to other high-level languages? :
Second, the pipeline break
[Command 1] | [Command 2]
Correct the output of a command as a command of the operation target 2
Split-screen display results
netstat -an command to see all of the network connection system
Can use the pipe, netstat -an | grep ESTABLISHED view of the client system is connected
Double pipe symbol nesting, view the number of rows, this technique is generally viewed by many people currently logged on the server
Third, Tsuhaifu
Four, Bash other special symbols
