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Full Discussion: Splitting a delimited text file
Top Forums Shell Programming and Scripting Splitting a delimited text file Post 302899372 by Don Cragun on Monday 28th of April 2014 04:07:51 PM
Old 04-28-2014
Quote:
Originally Posted by lupin..the..3rd
On my system (HP-UX 11.31) I get:

awk: Input line Disposition: attachm cannot be longer than 3,000 bytes.
The input line number is 53. The file is qsubmit.processed.dump.
The source line number is 1.

FYI the input file has emails as large as several megabytes (because of mime encoded attachments).

Thanks!

---------- Post updated at 11:48 AM ---------- Previous update was at 11:47 AM ----------



Dropping them is ideal, but not necessarily a problem for me, as I can "grep -v" to remove them in a second pass.

---------- Post updated at 03:50 PM ---------- Previous update was at 11:48 AM ----------

Ok, I got what I needed using this. Thank you all for the helpful ideas, it got me pointed down the right path.

Code:
csplit -n 5 $1 /-dump-/ {*}

for i in $(ls xx*); do
  awk 'NR > 2' $i > ./output/$i.eml
  rm $i
done

Just out of curiosity, why did you decide not to use the awk script I suggested?
Code:
awk '
/^--dump/ {
	if(ofn != "") close(ofn)
	ofn = sprintf("message:%07d", ++f)
	next
}
{	print > ofn
}' dump

It only invokes awk once (instead of once per extracted message) and only reads and writes the data found in your input file once (instead of twice); so it should be considerably faster.
 

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LEARN ABOUT MOJAVE

zipsplit

zipnote(1)						      General Commands Manual							zipnote(1)

NAME

       zipsplit - split a zipfile into smaller zipfiles

SYNOPSIS

       zipsplit [-t] [-i] [-p] [-s] [-n size] [-r room] [-b path] [-h] [-v] [-L] zipfile

ARGUMENTS

       zipfile	Zipfile to split.

OPTIONS

       -t     Report how many files it will take, but don't make them.

       -i     Make index (zipsplit.idx) and count its size against first zip file.

       -n size
	      Make zip files no larger than "size" (default = 36000).

       -r room
	      Leave room for "room" bytes on the first disk (default = 0).

       -b path
	      Use path for the output zip files.

       -p     Pause between output zip files.

       -s     Do a sequential split even if it takes more zip files.

       -h     Show a short help.

       -v     Show version information.

       -L     Show software license.

DESCRIPTION

       zipsplit reads a zipfile and splits it into smaller zipfiles.

EXAMPLES

       To be filled in.

BUGS

       Does not yet support large (> 2 GB) or split archives.

SEE ALSO

       zip(1), unzip(1)

AUTHOR

       Info-ZIP

								v3.0 of 8 May 2008							zipnote(1)
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