Add escape character in front of all quotation marks in a file

Question

I have a pretty big json file and I would like to add the escape character in front of all quotation marks in it. For example I want to change: "CaptureDuration":0 to \"CaptureDuration\":0. I tried to substitute all " with \" in sed and vim but I guess due to the special type of the escape character it wasn't working properly.

Answer 1

Use sed and you needed to escape \ as it's special character:

sed 's/"/\\"/g' infile