Read File and use contents to rename another

Shark Tek · #1 (**permalink**) 02-24-2009

Hello guys, thank God that I found this forum.

I hope that someone can help me because I don't have any idea on how to start it. I know that for some of you this is a very simple task but I'm not as advance on shell scripting like many people out there.

I got this file with a permanent filename (RSA_RECORDS.txt) that the content always starts like this.

Code:

#  ISSUER CODE: QPPS                                                                                                                                                                                    
#  FROM DATE: 20090224                                                                                                                                                                                  
#  TO DATE: 00000000                                                                                                                                                                                    
#  SEQUENCE NUMBER: 001                                                                                                                                                                                 
#  RECORD COUNT: 0000000003                                                                                                                                                                             
#  NUMBER OF FIELDS: 015                                                                                                                                                                                
#  DELIMITER: ; 
BLABLABABLABLABLA
BLABLABABLABLABLA
BLABLABABLABLABLA

I need a shell script that can read those first four lines and creates a copy of that same file with the following name.

QPPS_20090224_00000000_01.txt

As you can notice the name is created by using those first four lines of the file.

<ISSUER CODE>_<FROM DATE>_<TO DATE>_<SEQUENCE NUMBER>.txt

The only issue here is that the main file changes everyday and that is the reason that I need a shell script that can dynamically create a copy of that main file with an specific name.

On my Unix server I can see that I have awk and sed support. No perl, python, ruby, etc.

Thanks for your help guys

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