How to delete // comment lines in all files in current folder and subfolders?

Question

I need to delete all comments inside all script files in the current folder and sub folders. All comment lines start with //. I want to delete the whole line

Answer 1

find . -type f |xargs sed -i '\#^//#d'

the find part find all files, and the sed part removes all lines starting with //

You can add -name option in find to do further filtering. check man find to get more useful information.

Your pattern contains slash /, so with sed's default /pattern/d you have to do some escaping. I used # as delimiter to save that kind of works, and made the code easier to read.