Add four spaces before each line of code in terminal [Windows]

Question

Is there any faster way to add fours spaces to each line except by manually adding it? How could it be done from a terminal in Windows?

sed 's/^/    /' file

This would work on unix/linux. How could this command be written in Windows?

• I get this error:

  'sed' is not recognized as an internal or external command, operable program or batch file.