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Full Discussion: Splitting a delimited text file
Top Forums Shell Programming and Scripting Splitting a delimited text file Post 302899374 by lupin..the..3rd on Monday 28th of April 2014 04:31:35 PM
Old 04-28-2014
Quote:
Originally Posted by Don Cragun
Just out of curiosity, why did you decide not to use the awk script I suggested?
Thank you Don, I agree that it is more elegant to only invoke awk one time, rather than twice. Even more so when you consider that the dump files I need to split up are ~4 GB each in size, containing ~12,000 emails each.

But at least on my HP-UX 11.31 servers, I get the following awk error:

Code:
itl1 # ./script.sh ./admin.inbox
awk: A print or getline function must have a file name.
 The input line number is 1. The file is ./admin.inbox.
 The source line number is 7.
itl1 # cat script.sh
awk '
/^--dump/ {
        if(ofn != "") close(ofn)
        ofn = sprintf("message:%07d", ++f)
        next
}
{       print > ofn
}' $1
itl1 #
itl1 # uname -a
HP-UX itl1 B.11.31 U ia64 3456089508 unlimited-user license
itl1 #

---------- Post updated at 04:31 PM ---------- Previous update was at 04:19 PM ----------

Update: Trying the same thing on RHEL6, I get the following error:
Code:
[root@email root]# ./script.sh ./sub.proc
awk: cmd. line:6: (FILENAME=./sub.proc FNR=1) fatal: expression for `>' redirection has null string value
[root@email root]# cat script.sh
#!/bin/sh
awk '
/^--dump/ {
        if(ofn != "") close(ofn)
        ofn = sprintf("message:%07d", ++f)
        next
}
{       print > ofn
}' $1
[root@email root]# uname -a
Linux email.dev 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Dec 13 06:58:20 EST 2013 x86_64 x86_64 x86_64 GNU/Linux
[root@email root]#

 

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LEARN ABOUT DEBIAN

flow-split

flow-split(1)						      General Commands Manual						     flow-split(1)

NAME

       flow-split -- Split flow files into smaller files.

SYNOPSIS

       flow-split [-gGhn]  [-b big|little]  [-C comment]  [-d debug_level]  [-N nflows]  [-o outfile_basename]	[-T nseconds]  [-z z_level]

DESCRIPTION

       The flow-split utility will split a flow file into smaller files based on the the number of flows or the ammount of time that has passed.

OPTIONS

       -b big|little
		 Byte order of output.

       -C Comment
		 Add a comment.

       -d debug_level
		 Enable debugging.

       -g	 Split on source tag.

       -G	 Split on destination tag.

       -h	 Display help.

       -n	 Use symbols for tag field in filename.

       -N nflows Split after processing nflows.

       -o outfile_basename
		 The basename of the resulting files.

       -T nsecond
		 Split after processing an interval of nseconds flows.

       -z z_level
		 Configure compression level to  z_level.  0 is disabled (no compression), 9 is highest compression.

EXAMPLES

       Create 1 minute flow files from the flow archive in /flows/krc4.  Store the results in /flows/krc4.split

	 flow-cat /flows/krc4 | flow-split -T60 -o /flows/krc4.split/1min.

BUGS

       None known.

AUTHOR

       Mark Fullmer maf@splintered.net

SEE ALSO

       flow-tools(1)

																     flow-split(1)
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