Scale the font of the terminal window
1. ctrl + shift + = enlarge the font display of the terminal window
2. ctrl + - shrinks the font display of the terminal window
autocompletion
After typing the first few letters of the file/directory/command, press the tab key
1. If there is no ambiguity in the input, the system will automatically complete
2. If there are other files/directories/commands, press the tab key again, the system will prompt the possible commands
command used
1. Press the up/down cursor keys to switch back and forth between the commands you have used
2. If you want to exit the selection and do not want to execute the currently selected command, you can press ctrl + c