Questions[text](server)

If I have a log file and want to dump only the text between 1234 and 9876 in to another file, how can i do this easily?

If I have a text file like this:

idsfsvcvs sdf sdf e e  sd vs d s g sg  s vc  d

slkdfnls 1234 keep me text 9876 das a g w eg dsf sd fsdf
sdfs fs dfsdf
sdfsdf sdf
sdf s fs
dfsf ds

I want to do somthing like this

$ getinfo "1234" "9876" log

$ cat log

keep me text

I have binary files that should be text (they're exported logs), but I can't open it with less (it looks ugly - it looks like a binary file). I found that I could open it with vi and I can cat it (you'll see the actual logs), but what I'd really like to do is grep through them (without having to open up each one with vi and then perform a search). Is there a way for me to do that?

How do I remove empty/blank (including spaces only) lines in a file in Unix/Linux using the command line?

contents of file.txt

Line:Text
1:<blank>
2:AAA
3:<blank>
4:BBB
5:<blank>
6:<space><space><space>CCC
7:<space><space>
8:DDD

output desired

1:AAA
2:BBB
3:<space><space><space>CCC
4:DDD

I need to dump all the Group Policies within Active Directory to review offline at a later date. Is there a way I can easily export all the Group Policies to text or some other easily-parseable format?

Edit: Will these tools work from a computer that is not part of the domain? I have domain credentials, but my work laptop isn't necessarily part of the domain I need to review.

Is there a way to remote control a Windows machine as easy as I do with my other Linux pcs through SSH?

I'm currently using a FTP server for files but I prefer the way I can manage my other linux boxes. I'd like it to be textual just like ssh, is there anything like that? I mean running programs, rebooting/turning off, copying/editing files ect...

I read about Cygwin, does it do what I need?

EDIT:
I did not specified it before, it should be free