if use -r need
-- include= gpio_pins.c after grep -iPe ' ' On 3/6/18, Paul Eggert <egg...@cs.ucla.edu> wrote: > On 03/05/2018 02:26 AM, maik.bre...@continental-corporation.com wrote: >> So the problem for me is that I can not find "gpioPwm5" in gpio_pins.c, >> when I perform 'grep -irn "gpioPwm5"'. > > Most likely the files you're worried about are symbolic links. grep -r > does not follow symlinks. Use grep -R if you want to follow symlinks. > > > > >