I have a below line in file '/data/control.dat'..

migration.MW051 52013/nm16,CDW

I want to fetch only migration.MW051 52013/nm16

Below is the code, But it is fetching full line. Can you help on this.

Code:
$CONTROL_FILE=/data/control.dat
        open (CONTROL_FILE, "<$CONTROL_FILE") or handle_error(open_control_file);

        while ( $ENTRY = <CONTROL_FILE>
...