shell scripts and batch scripts

ls.bat

@echo off
set _la="-la"
set _l="-l"
if "%1"==%_la% (
dir /OG %2
) else (
if "%2"==%_la% (
dir /OG %1
) else (
if "%1"==%_l% (
dir /OG %2
) else (
if "%2"==%_l% (
dir /OG %1
) else (
dir /W /OG %1
)
)
)
)

treesize.sh

#!/bin/bash

du -h $1|grep -v '/.*/'