- echo "#ifndef QMK_KEYBOARD\n#define QMK_KEYBOARD\n" > lib/lufa/Bootloaders/DFU/Keyboard.h
- echo `grep "MANUFACTURER" $(ALL_CONFIGS) -h | tail -1` >> lib/lufa/Bootloaders/DFU/Keyboard.h
- echo `grep "PRODUCT" $(ALL_CONFIGS) -h | tail -1` Bootloader >> lib/lufa/Bootloaders/DFU/Keyboard.h
- echo `grep "QMK_ESC_OUTPUT" $(ALL_CONFIGS) -h | tail -1` >> lib/lufa/Bootloaders/DFU/Keyboard.h
- echo `grep "QMK_ESC_INPUT" $(ALL_CONFIGS) -h | tail -1` >> lib/lufa/Bootloaders/DFU/Keyboard.h
- echo `grep "QMK_LED" $(ALL_CONFIGS) -h | tail -1` >> lib/lufa/Bootloaders/DFU/Keyboard.h
- echo `grep "QMK_SPEAKER" $(ALL_CONFIGS) -h | tail -1` >> lib/lufa/Bootloaders/DFU/Keyboard.h
- echo "\n#endif" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "#ifndef QMK_KEYBOARD\n#define QMK_KEYBOARD\n\n" > lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "%s\n" "`$(GREP) "MANUFACTURER" $(ALL_CONFIGS) -h | tail -1`" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "%s Bootloader\n" "`$(GREP) "PRODUCT" $(ALL_CONFIGS) -h | tail -1`" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "%s\n" "`$(GREP) "QMK_ESC_OUTPUT" $(ALL_CONFIGS) -h | tail -1`" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "%s\n" "`$(GREP) "QMK_ESC_INPUT" $(ALL_CONFIGS) -h | tail -1`" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "%s\n" "`$(GREP) "QMK_LED" $(ALL_CONFIGS) -h | tail -1`" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "%s\n" "`$(GREP) "QMK_SPEAKER" $(ALL_CONFIGS) -h | tail -1`" >> lib/lufa/Bootloaders/DFU/Keyboard.h
+ printf "\n#endif" >> lib/lufa/Bootloaders/DFU/Keyboard.h