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Full Discussion: Read a tab delimited
Top Forums UNIX for Dummies Questions & Answers Read a tab delimited Post 302247985 by podzach on Thursday 16th of October 2008 08:50:30 PM
Old 10-16-2008
Read a tab delimited

OK, let's set this up. I have a tab delimited file from excel. In my UNIX shell I have the following lines
Code:
   IFS=`printf "\t"`
   while read LINE_NO SKIP IGNORE_ERRORS OTHER
   do
 ....

This works fine if there is something in every column like this. NOTE, those are tabs, not spaces. Smilie
Code:
17      SKIP    FALSE   Endofline

LINE_NO=17
SKIP=SKIP
IGNORE_ERRORS=FALSE
OTHER=Endofline


The problem comes about if one of the columns is a null like this.
Code:
17                FALSE   Endofline

LINE_NO=17
SKIP=FALSE
IGNORE_ERRORS=Endofline
OTHER=

How do I get unix to see that double tab? I am on an AIX box running a ksh shell.

Thanks for your time
 

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CSV2MIPE(1)						User Contributed Perl Documentation					       CSV2MIPE(1)

NAME
csv2mipe.pl - Generates MIPE file based on 3 tab-delimited files based on MIPE version v1.1 arguments: * tab-delimited file with PCR-level data * tab-delimited file with SNP-level data * tab-delimited file with assay-level data Columns in file with PCR-level data: pcr_id pcr_modified (might be multiple, divided by semi-colon ";") pcr_project (might be multiple, divided by semi-colon ";") pcr_researcher (might be multiple, divided by semi-colon ";") pcr_species source_type source_id design_seq primer1_oligo primer1_seq primer1_tm primer2_oligo primer2_seq primer2_tm design_remark (might be multiple, divided by semi-colon ";") use_seq use_revcomp use_remark (might be multiple, divided by semi-colon ";") pcr_remark (might be multiple, divided by semi-colon ";") Columns in file with SNP-level data: pcr_id snp_id snp_pos snp_amb snp_remark (might be multiple, divided by semi-colon ";") Columns in file with assay-level data: pcr_id snp_id assay_id assay_type assay_enzyme assay_oligo assay_specific assay_tail assay_strand assay_remark (might be multiple, divided by semi-colon ";") SYNOPSIS
csv2mipe.pl <pcr_file.csv> <snp_file.csv> <assay_file.csv> ADDITIONAL INFO
See http://mipe.sourceforge.net AUTHOR
Jan Aerts (jan.aerts@bbsrc.ac.uk) perl v5.14.2 2005-07-20 CSV2MIPE(1)
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