diff --git a/Installer/Ubuntu/ubuntu.sh b/Installer/Ubuntu/ubuntu.sh
index c5c8c358..677e900f 100644
--- a/Installer/Ubuntu/ubuntu.sh
+++ b/Installer/Ubuntu/ubuntu.sh
@@ -64,13 +64,13 @@ command+=" HOME=/root"
 command+=" PATH=/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/games:/usr/local/games"
 command+=" TERM=\$TERM"
 command+=" LANG=C.UTF-8"
-command+=" /bin/bash --login"
-com="\$@"
-if [ -z "\$1" ];then
-    exec \$command
+command+=" /bin/bash"
+if [[ -z \$1 ]];then
+        command+=" --login"
 else
-    \$command -c "\$com"
+        command+=" -c $@"
 fi
+exec \$command
 EOM
 
 echo "fixing shebang of $bin"