Bash Tutorial
Check file size:
du -sh /some/folder
-h for the human readable format, -s for grand total size of the folder.
Create a file:
touch some.py
create a folder:
mkdir some/folder/
Delete a file:
rm some.py
delete a folder
rm -r some/
Rename or move a folder:
mv source/directory/ target/directory/
Copy a file:
cp some/folder/file.py /new/location/
copy a folder:
cp -r some/folder/ /new/location/