Pit record of Chmod 2 options in deepin

background ：

1. stay deepin Practice in   chmod xxxx myfile when , xxxx You need to change the owner at the same time （u） And other user groups . 

2. It was used chmod u+x o-w myfile, You don't succeed ;

3. It was used chmod u+x, o-w myfile, It didn't work （ The pit is here ）;

 

solve ：

Go out above   “3. ....” in o-w The space in front of it .：-）

In the above “3. It was used chmod u+x, o-w myfile in ,o-w front , After comma , There is a space . It makes the above command impossible .

difference ：

chmod u+x, o-w myfile (x)

chmod u+x,o-w myfile (v)