[Linux] CentOS study note 2 (command)

[Linux] CentOS study note 2 (command) Open the folder: cd finename create directory: mkdir/filename mkdir-p/test/123/111 (Multi-Level directory) delete directory: rmdir is used to delete a directory or file: rm is used to find the absolute path of a command: which is used to set the alias of the command: alias for example, alias rm = 'rm-I 'to view the file list: ls (short for list)-a list all copy files: cp such as cp file_1 file_2 to copy Directory: cp-r file_1 file_2 move file: mv file_1 file_2 View: cat fleName tac: the number of rows in turn shows head-3 filename shows the first three rows