Sinan'ın Yeri

I forgot how to group regex in sed and also using \ with paranthesis. Here is a summary 1-If you group a regex with () then \1,...,\10 is the way to call them. 2-You must put \'s before any paranthesis inside sed like this sed "s/\([0-9]\{1,3\}),\([0-9]\{1,3\}/\1.\2/g" This sed makes two groups [0-9]\{1,3\} representing the digits before and after ",". And makes the comma between them a point ".". And prints the result. This is the page which inspired me http://www.catonmat.net/blog/sed-one-liners-explained-part-one/