run shell script when system init

需要修改init.rc

service ServiceName Pathshell Pathshellscript
    oneshot

ServiceName: 填寫service名稱
Pathshell:  sh的路徑
Pathshellscript:  shellscript的路徑

ex.
執行lnset.sh

service lnset /system/bin/sh /system/etc/lnset.sh
    oneshot

cat lnset.sh

ln -s /dev/ttymxc1 /pipecfromsh

ln -s /dev/ttymxc1 /cache/pipecfromsh