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Full Discussion: Shell Programming in unix
Top Forums Shell Programming and Scripting Shell Programming in unix Post 302167232 by nivas on Thursday 14th of February 2008 12:12:43 AM
Old 02-14-2008
Shell Programming in unix

Hi,

i want to read a full file.

If i want to split the file and by reading parralel each, i can save the time.

Can any body give me the suggesion??

ia m using this function to read a file and using that i have to grep in another file. since the file 1 is huge it is taking lot of time.

iam planning to split that and run parraley.

suggesions pls



read_file1()
{
cat file1.txt | while read line
do
grep $line file2.txt >> outputfile.dat
done
}
nivas
 

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BP_DBSPLIT(1p)						User Contributed Perl Documentation					    BP_DBSPLIT(1p)

NAME
dbsplit - script to split an input set of database(s) into smaller pieces SYNOPSIS
dbsplit.PLS --size 50 [-i inputfile] [-if inputformat] [-of outputformat] [--prefix outputprefix] [ < file1 file 2 OR file1 file2] DESCRIPTION
This script will take as input a list of filenames or a single file or from STDIN a sequence database and split the database into separate files of X numbers of sequences. You specify X with the "--size/-s" parameter. The input and output sequence format is any that is supported by bioperl (fasta,embl,genbank,gcg, swissprot, etc). You can specify the input data either as a single file with -i filename, or as a single file as an argument like % dbsplit file1 file2 or as a list of sequence data with % cat file1 file2 file3 | dbsplit You'll want to use the "--prefix" to specify what the output prefix will be. FEEDBACK
Mailing Lists User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to the Bioperl mailing list. Your participation is much appreciated. bioperl-l@bioperl.org - General discussion http://bioperl.org/wiki/Mailing_lists - About the mailing lists Reporting Bugs Report bugs to the Bioperl bug tracking system to help us keep track of the bugs and their resolution. Bug reports can be submitted via the web: https://redmine.open-bio.org/projects/bioperl/ AUTHOR
Jason Stajich, jason-at-bioperl-dot-org perl v5.14.2 2012-03-02 BP_DBSPLIT(1p)
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