Vim substitution

Let say that you want to add string 'bprdp' and the end of each line beginning with string 'bc' and ending with comma you should use following command:

:% g/^bc/s/\,$/, bprdp/

% means the whole file g/ for each line with pattern after '/' in above case pattern is ^bc line beginning with bc s/\,$/, bprdb/ substitute comma (\,) followed by end of line character ($) with ', bprdb'.

I wrote this message based on Vim regular expression and Vim Command Cheat Sheet.