sleep time correctly computed

patch-control.sh

@@ -162,7 +162,8 @@ zenity --question \
        --cancel-label="No, thanks" && firefox http://localhost:1301/ &
 
 # Wait the end of the run
-sleep ${run_duration}
+let 'run_duration_seconds = ${run_duration} * 60'
+sleep ${run_duration_seconds}
 
 zenity --info --text="Run ${run_number} finished!"