创建文件并编辑文件
vi test.txt //build a file named test.txt
i //enter into edit stat
// press "ESC"
:wq // save file
cat test.txt // check file
创建文件并编辑文件
vi test.txt //build a file named test.txt
i //enter into edit stat
// press "ESC"
:wq // save file
cat test.txt // check file