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#1
06-22-2006
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Find null fields in file
Hi All,
I have some csv files out of which i want to find records which have empty values in either the 14th or 16th fields. The following is a sample. $cut -d',' -f14,16 SPS* | head -5 VOIP_ORIG_INFO,VOIP_DEST_INFO sip:445600709315@sip.com,sip:999@sip.com sip:445600709315@sip.com,tel:999 sip:445600702897@sip.com,sip:08007317929@sip.com sip:445600702897@sip.com,sip:08007317929@sip.com Please let me know, what would be the filter criteria to find records and filename where these fields are empty. Thanks, Ashish. 
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#2
06-22-2006
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How do you know that a field is empty? Would there be just two commas following each other? Something like this?
Code:
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17... 1,2,3,4,5,6,7,8,9,10,11,12,13,,15,16,17... 1,2,3,4,5,6,7,8,9,10,11,12,13,,15,,17... If so, then you can just use the command that you've used. Code:
bash-3.00$ cat test
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17
1,2,3,4,5,6,7,8,9,10,11,12,13,,15,16,17
1,2,3,4,5,6,7,8,9,10,11,12,13,,15,,17
bash-3.00$ cat test.sh
#!/usr/bin/ksh
oldIFS=$IFS
IFS=$IFS,
export IFS
cut -d',' -f14,16 test|while read fourteen sixteen; do
echo fourteen: $fourteen sixteen: $sixteen
[[ -z "$fourteen" ]] && echo fourteenth field is blank
[[ -z "$sixteen" ]] && echo sixteenth field is blank
done
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