Well I have a 3000 lines result log file that contains all the machine data when it does the testing... It has 3 different section that i am intrsted in

1) starting with "20071126 11:11:11 Machine Header 1"
1000 lines...

"End machine header 1"

2) starting with "20071126 12:12:12 Machine Header 2"
1000 lines...

"End machine header 2"

2) starting with "20071126 12:12:12 Machine Header 3"
1000 lines...

"End machine header 3"


With this their are a lot of junk data also..
I just want to grab these 3 headers and put in into different file With each header having his own sections
eg:
===================Header1 Start====================
<it's content>
===================Header1 End ====================
how I can do this .. I want something like this

./<New script> <old log file>

and it gives me a new log file.

Can you please help me in making this... I want to make it in bash scripting.