mv ./correlation_20201201.ipynb /Users/joohyunyoon/workspace/DL/ I am going to move ipynb file from current folder to DL folder. $ mv ./correlation_20201201.ipynb /Users/joohyunyoon/workspace/DL/ mv : Move /usr/local It is hierarchy for use by the system administrator when installing software locally. It needs to be safe from being overwritten when the system software is updated. It may be used ..