Concise Linux Command Line NOTE 2: cd cdcd is the abbreviation of change directory, mainly used to change the current directory www.2cto.com 1. usage cd [dirName] 2. common parameters without parameters indicate that the path is directly changed to the home directory-return to the previous directory ~ Same as above. It is also changed to the main directory/dir to the dir directory, and/dir .. switch to the parent directory. Pay attention to cd .. there is a space in the middle. indicates the current directory, cd. not significant 3. command tip cd/change to the root directory siu @ Darling ~ $ Cd/cd ~ Change to the main directory siu @ Darling/$ cd ~ Www.2cto.com cd .. return to the parent directory siu @ Darling ~ /Work $ cd... siu @ Darling ~ $ Cd-return siu @ Darling ~ $ Cd/tmpsiu @ Darling/tmp $ cd ~ Siu @ Darling ~ $ Cd-/tmpsiu @ Darling/tmp $ cd... back to the second-level directory siu @ Darling/tmp/mintUpdate $ cd... siu @ Darling/$