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Full Discussion: Divide large data files into smaller files
Top Forums Shell Programming and Scripting Divide large data files into smaller files Post 302438720 by rubin on Tuesday 20th of July 2010 01:39:48 PM
Old 07-20-2010
Quote:
Originally Posted by ad23
...
I need to split these huge files (~300-400Mb), into smaller files (around 30-40Mb each). Also, I don't want to divide the data (i.e. every record starting with '>' should have its corresponding information in one smaller file).
If I correctly understand your requirement and assuming the above format of the big files,
Code:
awk '/^>[0-9]+$/ && c >=int(n/s) { k++; c=1; close(f) }
     { print > (f=FILENAME"_"k+1); c++ }' s=10 n="$(wc -l < bigfile)" bigfile

For different smaller files' sizes adjust the value of the variable s.
 

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LEARN ABOUT DEBIAN

vboxmode

vboxmode(1)						    Linux System Administration 					       vboxmode(1)

NAME

       vboxmode - detect format of isdn voice file

SYNOPSIS

       vboxmode [OPTION] [OPTION] [...] FILENAME

DESCRIPTION

       Vboxmode detects format of isdn voice files and au files (sun audio format).

OPTIONS

       -q, --quiet
	      Don't print information about the file, only detect format and return an error code.

       -h, --help
	      Show summary of options.

       -v, --version
	      Show version of program.

RETURN CODE

       The format of the file is returned as an error code:

       o      for .au files a value between 128 and 150
       o      for vbox files a value between 2 and 6
       o      for unknown format or errors 255

SEE ALSO

       autovbox(1), rmdtovbox(1), vboxtoau(1), vboxcnvt(1), vbox(5)

AUTHOR

       This manual page was written by Andreas Jellinghaus <aj@dungeon.inka.de>, for Debian GNU/Linux and isdn4linux.

ISDN 4 Linux 3.25						    2000/09/15							       vboxmode(1)
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