Shell Simple to use

First, the history of the command line

Press up and down to traverse the most recently entered command

<CTRL+r> after entering incremental mode

This can be viewed in the previous 2000 history

$ vim ~/.bash_history

Second, edit the command line

• <ctrl k>: Delete the part from the cursor to the end of the line
• <ctrl u>: Delete the part from the cursor to the beginning of the line
• <alt D>: Delete the part from the cursor to the end of the current word
• <ctrl W>: Remove the part from the cursor to the beginning of the current word
• <ctrl A>: Moves the cursor to the beginning of the line
• <ctrl E>: Moves the cursor to the end of the line
• <alt A>: Moves the cursor to the current Word header
• <alt E>: Moves the cursor to the end of the current word
• <ctrl y>: Inserting recently deleted words

Iii. Ordering of commands

Execute the Command1 first, regardless of whether Command1 is wrong, then execute Command2

Command1;command2

Execute Command2 only if Command1 is properly run

Command1 & Command2

Iv. output Redirection

">" is the output redirect , you can save the command output to a file, ">>" and ">" function similarly,

The difference is that ">" is a new or rewritten file, and ">>" appends the content to the end of the file.

Shell Simple to use