Common Linux Command statements and linux statements

Common Linux Command statements and linux statements
View the current directory: pwd view the file size: ls-l return to the upper level: cd .. return to the root directory: cd/create a hidden file vim. test show hidden file: ls-a edit file: 1.vim file name 2. press I to enter the insert mode. 3. after writing the file, Press esc, shift +:, enter wq, and press enter to save the file. View File Content: cat file name (if it is a txt file, you need to write the extension name more file name (a lot of file content, you can check it slowly) to create a directory: mkdir directory name mkdir-p CN/jiangsu/nanjing/gulou recursively create a mobile file: mv group_A group move group_A to the group directory to display the tree structure of the Directory: tree CN