how to go back in directory in linux code example

Example 1: how to go back to the last directory in linux

/
* File & Directory Commands *

To navigate into the root directory, use */ "cd /" /*
To navigate to your home directory, use */ "cd" /*or*/ "cd ~" /*
To navigate up one directory level, use*/ "cd .." /*
To navigate to the previous directory (or back), use */ "cd -"

Example 2: how to open directory in linux using command

Just use "open [path_to_dir]" in Unix or "start [path_to_dir]" in Windows as:
open .	#Open current directdory in Unix
start . #Open current directory in Windows