cd.md

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cd

cd allows the user to change their working directory

cd eecs398
cd wk06
cd advancedhw

If the user started in home and executed these three commands, pwd would output "~/eecs398/wk06/advancedhw"

Useful Options / Examples

There are multiple shortcuts that can be used with cd:

Option .

"." represents your current directory

Usage: cd ./<subdirectory>

Functionality: Can be used to limit typing when you are "deep" in your system For example, if you wanted to move a file from ~/eecs398/wk06/hw down to ~/eecs398/wk06/hw/problem1 you could just go to the hw directory and use mv <filename> ./problem1 When using cd, omitting the "." will do the same thing, i.e. you can cd into directories in your working directory with just their names

Option ..

".." represents the directory containing your current directory

Usage: cd ..

Functionality: Moves "up" one directory, changes your working directory to the directory containing your current directory This also works for longer paths, so if you are in ~/eecs398/wk06/advancedhw and you want to go to ~/eecs398/wk06/hw you can just use cd ../hw

Option ~

"~" represents your home directory

Usage: cd ~

Functionality: This takes you all the way back to your home directory Allows you to accomplish multiple iterations of "cd .." in one command Omitting the ~ will do the same thing, i.e. cd without a command will default to the home directory

Option -

"-" represents the previous working directory

Usage: cd -

Functionality: Returns you to you previous working directory This allows you to switch back and forth between directories that are "far apart". If you are in ~/eecs398/wk06/advancedhw and you use "cd ~", you will be in your home directory. If you then use "cd -", you will be back in ~/eecs398/wk06/advancedhw