I think... (but not sure)... that your problem using $USER comes from using single quotes ( 'single quotes' ). You cannot use variables with those... modify the string to not use them and $USER will probably work fine.
I think... (but not sure)... that your problem using $USER comes from using single quotes ( 'single quotes' ). You cannot use variables with those... modify the string to not use them and $USER will probably work fine.