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Full Discussion: Removing inserted newlines from a fileld of fixed width file.
Top Forums Shell Programming and Scripting Removing inserted newlines from a fileld of fixed width file. Post 302345222 by enigma_1 on Tuesday 18th of August 2009 05:23:33 PM
Old 08-18-2009
Error Removing inserted newlines from a fileld of fixed width file.
Hi champs!

I have a fixed width file in which the records appear like this

Code:
11111 <fixed spaces such as 6> description for 11111 <fixed spaces such as 6> some more field to the record of 11111
22222 <fixed spaces such as 6> description for 22222 <fixed spaces such as 6> some more field to the record of 22222
33333 <fixed spaces such as 6> description 
for 33333 <fixed spaces such as 6> some more field to the record of 33333
44444 <fixed spaces such as 6> description for 44444 <fixed spaces such as 6> some more field to the record of 44444

As you see, the record for 33333 is split into two records because of newline inserted in description of 33333. I want these extraneous newlines from description field to be removed for records where ever they appear in the file.
Clues can be : check the file for length 11 -32 for each record and if newline is present strip it off.
Any other solution is welcome too.
I want the output to be :

Code:
11111 <fixed spaces such as 6> description for 11111 <fixed spaces such as 6> some more field to the record of 22222
22222 <fixed spaces such as 6> description for 22222 <fixed spaces such as 6> some more field to the record of 22222
33333 <fixed spaces such as 6> description for 22222 <fixed spaces such as 6> some more field to the record of 33333
44444 <fixed spaces such as 6> description for 44444 <fixed spaces such as 6> some more field to the record of 44444


- it is not fixed that line break will appear after 'description' only..it can appear anywhere in the second field.But it is sure that it will appear in second field only, incase it appears.

- This is just the sample record for understanding, code should not be dependent on it.The code can be dependent on positioning if required.
It is a fixed width file that means each filed is identified by length in the record.


Please let me know if you need more clarification.
Last edited by enigma_1; 08-18-2009 at 06:55 PM.. Reason: code tags, PLEASE!
 

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LEARN ABOUT MOJAVE

cap_mkdb

CAP_MKDB(1)						    BSD General Commands Manual 					       CAP_MKDB(1)

NAME

     cap_mkdb -- create capability database

SYNOPSIS

     cap_mkdb [-v] [-f outfile] file1 [file2 ...]

DESCRIPTION

     Cap_mkdb builds a hashed database out of the getcap(3) logical database constructed by the concatenation of the specified files .

     The database is named by the basename of the first file argument and the string ``.db''.  The getcap(3) routines can access the database in
     this form much more quickly than they can the original text file(s).

     The ``tc'' capabilities of the records are expanded before the record is stored into the database.

     The options as as follows:

     -f outfile
	     Specify a different database basename.

     -v      Print out the number of capability records in the database.

FORMAT

     Each record is stored in the database using two different types of keys.

     The first type is a key which consists of the first capability of the record (not including the trailing colon (``:'')) with a data field
     consisting of a special byte followed by the rest of the record.  The special byte is either a 0 or 1, where a 0 means that the record is
     okay, and a 1 means that there was a ``tc'' capability in the record that couldn't be expanded.

     The second type is a key which consists of one of the names from the first capability of the record with a data field consisting a special
     byte followed by the the first capability of the record.  The special byte is a 2.

     In normal operation names are looked up in the database, resulting in a key/data pair of the second type.	The data field of this key/data
     pair is used to look up a key/data pair of the first type which has the real data associated with the name.

RETURN VALUE

     The cap_mkdb utility exits 0 on success and >0 if an error occurs.

SEE ALSO

     dbopen(3), getcap(3), termcap(5)

BSD
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