搜尋某目錄下某副檔名中的字串

find ./myandroid9.1/kernel_imx/ -name \*.h -exec grep -wnH SERIAL_IO_MEM {} \;

搜尋此目錄下 - ./myandroid9.1/kernel_imx/
副檔名為.h
搜尋字串為SERIAL_IO_MEM

Reference:
http://blog.roodo.com/jaytech/archives/9783869.html