perl script for mounted disk space on Temp in Linux machine : I am new to perl world. I written one perl script for calculating free disk space. But whenever output generates, it gives me different number than what actually shows using df -h command. 

So my requirement is i want to show specific mounted free disk space. E.g I want to show only /boot "Use%" figure and it should match with df -h command figure. 

Please find my script for reference. 
