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Top Forums Shell Programming and Scripting WARNING! 16126 bare linefeeds received in ASCII mode Post 302934858 by drl on Wednesday 11th of February 2015 12:19:05 PM
Old 02-11-2015
Hi.
Quote:
Originally Posted by joshilalit2004
I tried dd but it is not converting the file correctly as it has few packed decimal columns in it..
...
I tried iconv and it says "iconv: conversion from EBCDIC unsupported" and recoded says "No manual entry for recode."....
If you wish to do more work yourself, see perl code at https://metacpan.org/pod/distributio...ert/IBM390.pod :
Quote:
Convert::IBM390 supplies various functions that you may find useful when working with IBM System/3[679]0 data. No functions are exported automatically; you must ask for the ones you want. "use ... qw(:all)" exports all functions.

By the way, this module is called "IBM390" because it will deal with data from any mainframe operating system. Nothing about it is specific to z/OS, or z/VM, z/VSE, i5/OS, z/TPF....

When transmitting EBCDIC data to your Perl environment via FTP, be sure to use the "binary" option. This will leave the data unconverted so that the module recognizes it. By default, FTP will translate the data to ASCII; this will convert the character fields correctly but garble other formats, such as packed-decimal and binary.
which then allows:
Quote:
unpackeb TEMPLATE RECORD
This function is much like Perl's built-in "unpack". It takes an EBCDIC record (structure) and unpacks it into a list of values. If called in scalar context, it will return only the first unpacked value. The TEMPLATE is patterned after Perl's unpack template but allows fewer options. The following characters are allowed in the template:

c or C (1) Character string without translation
e (1) EBCDIC string to be translated into ASCII; preserve
trailing nulls and spaces
E (1) EBCDIC string to be translated into ASCII; strip
trailing nulls and spaces
i (2) Signed integer (S/390 fullword)
I (2) Unsigned integer (4 bytes)
p (1) Packed-decimal field
...
Best wishes ... cheers, drl
This User Gave Thanks to drl For This Post:
 

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DD(1)							      General Commands Manual							     DD(1)

NAME
dd - convert and copy a file SYNOPSIS
dd [ option value ] ... DESCRIPTION
Dd copies the specified input file to the specified output with possible conversions. The standard input and output are used by default. The input and output block size may be specified to take advantage of raw physical I/O. The options are -if f Open file f for input. -of f Open file f for output. -ibs n Set input block size to n bytes (default 512). -obs n Set output block size (default 512). -bs n Set both input and output block size, superseding ibs and obs. If no conversion is specified, preserve the input block size instead of packing short blocks into the output buffer. This is particularly efficient since no in-core copy need be done. -cbs n Set conversion buffer size. -skip n Skip n input records before copying. -iseek n Seek n records forward on input file before copying. -files n Catenate n input files (useful only for magnetic tape or similar input device). -oseek n Seek n records from beginning of output file before copying. -count n Copy only n input records. -conv ascii Convert EBCDIC to ASCII. ebcdic Convert ASCII to EBCDIC. ibm Like ebcdic but with a slightly different character map. block Convert variable length ASCII records to fixed length. unblock Convert fixed length ASCII records to variable length. lcase Map alphabetics to lower case. ucase Map alphabetics to upper case. swab Swap every pair of bytes. noerror Do not stop processing on an error. sync Pad every input record to ibs bytes. Where sizes are specified, a number of bytes is expected. A number may end with or to specify multiplication by 1024 or 512 respectively; a pair of numbers may be separated by to indicate a product. Multiple conversions may be specified in the style: is used only if or conversion is specified. In the first two cases, n characters are copied into the conversion buffer, any specified character mapping is done, trailing blanks are trimmed and new-line is added before sending the line to the output. In the latter three cases, characters are read into the conversion buffer and blanks are added to make up an output record of size n. If is unspecified or zero, the and options convert the character set without changing the block structure of the input file; the and options become a simple file copy. SOURCE
/sys/src/cmd/dd.c SEE ALSO
cp(1) DIAGNOSTICS
Dd reports the number of full + partial input and output blocks handled. DD(1)
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