vim search and replace using current line as reference point - Stack Overflowhttps://stackoverflow.com/questions/18020381/vim-search-and-replace-using-current-line-as-reference-point
You can use . for the current position, and .+10 for 10 lines down:
:.,.+10s/foo/bar/g
Some other useful ranges:
% for the whole file. Example: :%s/foo/bar/g.
'<,'> for the lines of visually selected block. This might get you more than you want of the visual selection starts or ends in the middle of a line. The whole line is included.
'a,'b from mark a to mark b.
.,$ from the current line to the end of the file.