trb.sh: added support for gksudo

trb.sh

@@ -1,13 +1,24 @@
 #!/bin/bash
 
+if [ ! -f /usr/bin/zenity ];then
+    echo "Zenity not installed..."
+    exit 0;
+fi
+
+distro=$(lsb_release -a | grep -o "VoidLinux")
+
+if [ $distro = "VoidLinux" ];then
+    su_prompt="gksudo"
+else
+    su_prompt="pkexec"
+fi
 
-    
 zenity --question --text "Do you want to trim?"
 if [[ $? == 1 ]];then
     exit
 else
     
-    results=$(pkexec /sbin/fstrim -va)
+    results=$($su_prompt "/sbin/fstrim -va")
     notify-send "${results}"
 
 fi