M-x find-name-dired
: you will be prompted for a root directory and a filename pattern.- Press
t
to “toggle mark” for all files found. - Press
Q
for “Query-Replace in Files…”: you will be prompted for query/substitution regexps. - Proceed as with
query-replace-regexp
:SPACE
to replace and move to next match,n
to skip a match, etc. - Press
C-x s
to save buffers. (You can then pressy
for yes,n
for no, or!
for yes for all)