Linux Learning Diary: The next day

Learn vi editing commands today;

[Email Protected]:vi Hello.java

The command to use:

Insert command:

• a and i: Insert text before or after the current cursor (a and i insert text at the end of the current line or at the beginning of the line);

• o and o : Inserts text below or above the current line. (Line wrapping)

After editing, press ESEC, execute Save command: (: wq-Save exit,: q! do not save direct exit)

[Email Protected]::wq

Execute the LS command to view the file:

Found two files, before a lowercase hello.java is a previously created file, do not use the RM command to delete it:

RM XX Delete a file
  rm-f XX Delete When not prompted, can be used in conjunction with the R parameter
  RM-RF XX Delete the entire directory called XX under the current directory

Next, execute the javac command to compile the Hello.java file:

Javac package found not found, install Javac compile package

Linux Learning Diary: The next day