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#!/usr/bin/ruby
# for all files
file_names = Dir.glob("**/*.h") + Dir.glob("**/*.cpp")
new_header = File.read('new_header')
old_header = File.read('old_header')
file_names.each do |file_name|
text = File.read(file_name)
new_contents = text.gsub(old_header, new_header)
# To merely print the contents of the file, use:
#puts new_contents
# To write changes to the file, use:
File.open(file_name, "w") {|file| file.puts new_contents }
end
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