Ubuntu循環可以用while，例如：
1.每隔1秒無限循環命令：
//格式while true ; do 命令 ; sleep 1 ; done;//示例while true ; do sudo python ./RN2483_test.py ; sleep 1; done;
//格式
while true ; do 命令 ; sleep 1 ; done;
//示例
while true ; do sudo python ./RN2483_test.py ; sleep 1; done;
2.每隔0.5秒執行n次命令：
//格式mycount=0; while(($mycount//示例mycount=0; while(($mycount<1000));do sudo python ./RN2483_test.py; ((mycount = $mycount+1));sleep 0.5; done;
mycount=0; while(($mycount//示例mycount=0; while(($mycount<1000));do sudo python ./RN2483_test.py; ((mycount = $mycount+1));sleep 0.5; done;
mycount=0; while(($mycount<1000));do sudo python ./RN2483_test.py; ((mycount = $mycount+1));sleep 0.5; done;
