delete all comments from a text file

gistfile1.txt

function delete() {
  echo "sed -i '' '/^#/d'"
  echo "sed -i '' '/^$/d;G'"

}

in command line for mac:

$ sed -i '' '/^#/d'  (yourfilename here)

removes all the lines starting with the symbol (comment) #

$ sed -i '' '/^$/d;G'  (your filename here) 

removes all the lines that have multiple lines after running the above command