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| Thread | Thread Starter | Forum | Replies | Last Post |
| Compare 2 files for a single column and output differences | samit_9999 | UNIX for Dummies Questions & Answers | 1 | 04-23-2008 09:02 AM |
| Consecutive spaces within input being converted to single space | NinersFan | Shell Programming and Scripting | 4 | 09-04-2007 05:59 AM |
| How can find Null value in If condition | koti_rama | Shell Programming and Scripting | 2 | 07-17-2007 02:20 AM |
| replacing single space in argument | convenientstore | Shell Programming and Scripting | 7 | 04-25-2007 10:02 AM |
| compare null with non-null | nitin | Shell Programming and Scripting | 8 | 11-04-2006 04:58 PM |
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#1
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How to compare null and space using single if condition
Hi
I have a input file with many fields and each filed will be with in double quotes(""). i want to check fields contains balnk,null or space using condition using if. when i write code as below for if condition its not working a=`awk -F ',' '{gsub("\"", "", $1);'NF==0';printf $1}' temp.txt` echo $a if [ -z "$a" ] || ["$a" = " " ] then echo "1st filed contains null or space please correct" else echo " field has data" fi Error message: Account_SourceFile_Validation.sh[288]: [ : not found. Can any one help on this. Thanks |
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#2
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Try this:
Code:
awk -F "," '
{s=$0;gsub(" ", "")}
/""/{print "With blanc field: "s;next}1' temp.txt
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#3
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Or just simply
Code:
egrep '(^|,)" *"(,|$)|^,|,,|,$' temp.txt |
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#4
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Thank you very much.It was a timely help.
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