Makefile shell script; sed command

1. To use the shell script in makefile, you need to add the "@" symbol, for example:

@if [-D xxx]; Then \//-d to determine the existence, in the shell, with the [] number instead of parentheses

RM-RF xxx; \

Fi

@cp-FV xxx xxxx//-f Delete the existing target file without prompting the-v CP command will tell the user what is being done

Example: CP-FV temp TEMP2

Display: ' Temp ', ' temp2 '

Find all the KO files and copy

@find sor_dir-name "*.ko"-exec sudo cp-vf ' {} ' des_dir '; '

@echo "OK."

2. Sed is the Linux under the Text Processing tool

Format: sed ' s/string to replace/new string/g ' (the string to replace can be used with regular expressions)

For example, replace the related string in the xxxx of a file

@cat xxxx | Sed "s/0000/9999/g" | Sed "s/\/\/#define 7777/#define 8888/G" > xxxx2

Makefile shell script; sed command