fix sulinstrapt for debian

scripts/sulinstrapt

-#!/bin/sh
+#!/bin/bash
 #sulinstrapt betiği ile sulinos chroot oluşturabilirsiniz veya diskinize kurulum yapabilirsiniz
-if [ "$1" == "" ] || [ "$1" == "-*" ]
+if [[ "$1" == ""  ||  "$1" == "-*" ]]
 then
 	echo "Usage: sulinstrapt [directory]"
 	exit 0
 fi
 sulin="$1"
-if [ $UID -ne 0 ]
+if [[ $UID -ne 0 ]]
 then
 	echo "You must be root!"
 	exit 1
 fi
-if [ -d "$sulin" ]
+if [[ -d "$sulin" ]]
 then
   echo "$sulin already exist"
 fi
-if [ -f "$sulin" ]
+if [[ -f "$sulin" ]]
 then
   echo "$sulin is a file. You must delete or move."
   exit 1