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Full Discussion: Read File and use contents to rename another
Top Forums Shell Programming and Scripting Read File and use contents to rename another Post 302291084 by Shark Tek on Tuesday 24th of February 2009 04:06:40 PM
Old 02-24-2009
Read File and use contents to rename another
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
Last edited by Shark Tek; 02-25-2009 at 01:23 PM..
 

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LEARN ABOUT REDHAT

mac2unix

dos2unix(1)						      General Commands Manual						       dos2unix(1)

NAME

       dos2unix - DOS/MAC to UNIX text file format converter

SYNOPSYS

       dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]

       Options:

       [-hkqV] [--help] [--keepdate] [--quiet] [--version]

DESCRIPTION

       This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format.

OPTIONS

       The following options are available:

       -h --help
	      Print online help.

       -k --keepdate
	      Keep the date stamp of output file same as input file.

       -q --quiet
	      Quiet mode. Suppress all warning and messages.

       -V --version
	      Prints version information.

       -c --convmode convmode
	      Sets conversion mode. Simulates dos2unix under SunOS.

       -o --oldfile file ...
	      Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.

       -n --newfile infile outfile ...
	      New  file  mode.	Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
	      used or you WILL lost your files.

EXAMPLES

       Get input from stdin and write output to stdout.

	      dos2unix

       Convert and replace a.txt. Convert and replace b.txt.

	      dos2unix a.txt b.txt

	      dos2unix -o a.txt b.txt

       Convert and replace a.txt in ASCII conversion mode.  Convert and replace b.txt in ISO conversion mode.  Convert	c.txt  from  Mac  to  Unix
       ascii format.

	      dos2unix a.txt -c iso b.txt

	      dos2unix -c ascii a.txt -c iso b.txt

	      dos2unix -c mac a.txt b.txt

       Convert and replace a.txt while keeping original date stamp.

	      dos2unix -k a.txt

	      dos2unix -k -o a.txt

       Convert a.txt and write to e.txt.

	      dos2unix -n a.txt e.txt

       Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.

	      dos2unix -k -n a.txt e.txt

       Convert and replace a.txt. Convert b.txt and write to e.txt.

	      dos2unix a.txt -n b.txt e.txt

	      dos2unix -o a.txt -n b.txt e.txt

       Convert c.txt and write to e.txt. Convert and replace a.txt.  Convert and replace b.txt. Convert d.txt and write to f.txt.

	      dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt

DIAGNOSTICS

BUGS

       The program does not work properly under MSDOS in stdio processing mode.  If you know why is that so, please tell me.

AUTHORS

       Benjamin Lin - <blin@socs.uts.edu.au>

       Bernd Johannes Wuebben (mac2unix mode) <wuebben@kde.org>

MISCELLANY

       Tested environment:

	      Linux 1.2.0 with GNU C 2.5.8

	      SunOS 4.1.3 with GNU C 2.6.3

	      MS-DOS 6.20 with Borland C++ 4.02

       Suggestions and bug reports are welcome.

SEE ALSO

       unix2dos(1) mac2unix(1)

1995.03.31							   dos2unix v3.0						       dos2unix(1)
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