deb22, if this is a serious question then tell us in your own words what each line of the batch file does, what the end results ("postconditions") are, etc. We can then tell you what the Linux counterparts are.
Do keep in mind that questions asking for help with hacking or exploits are against the rules.
Now, that said...
Something strange is going on. Someone with a completely different (but also female) name just posted the exact same question to Stackoverflow:
The question itself, of course, is nonsensical; nothing
in the batch file is portable to "shell script" (unless the shell is Powershell).
Originally Posted by 273
that looks suspiciously like a script to allow somebody administrator access to a computer without the user being notified -- it looks fishy to me.
From a comment
on another one of that user's StackOverflow posts
I have a really bad feeling about the script you're trying to translate.