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Replace a field where values are null in a file.


 
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# 1  
Old 06-04-2013
Replace a field where values are null in a file.

Hi,

I've a pipe delimited file and wanted to replace the 3rd field to 099990 where the values are null. How can I achieve it using awk or sed.

HTML Code:
20130516|00000061|02210|111554|03710|2|205069|SM APPL $80-100 RTL|S
20130516|00000061|02210|111554|03710|2|205069|SM APPL $80-100 RTL|S
20130517|00000067||185493|03662|4|205069|SM APPL $80-100 RTL|S
20130516|00000061||111554|03710|2|205069|SM APPL $80-100 RTL|S
20130516|00000061||111554|03710|2|205069|SM APPL $80-100 RTL|S
20130517|00000067|02210|185493|03662|4|205069|SM APPL $80-100 RTL|S
# 2  
Old 06-04-2013
Code:
awk -F"|" -v OFS="|" '!$3 { $3="099990"} 1' inputfile

This User Gave Thanks to Corona688 For This Post:
# 3  
Old 06-04-2013
Alternatively,

awk -F"|" '$3~/^$/{$3=099990}{print}' OFS="|" input
# 4  
Old 06-04-2013
@juzz4fun
The {print} could be replaced by 1
And $3~/^$/ is the same as !$3
Code:
awk -F\| '$3~/^$/{$3=099990}1' OFS="|"
awk -F\| '!$3{$3=099990}1' OFS="|"

another soulution (not a good one, will replace any ||)
Code:
awk '{sub(/\|\|/,"|099990|")}1'


Last edited by Jotne; 06-04-2013 at 05:39 PM..
# 5  
Old 06-04-2013
Note that 1.
Code:
!$3

also replaces fields with 0 or 00,
while 2.
Code:
$3~/^$/

only replaces empty fields.
We had a discussion in another thread about $3=="" that IMHO should be equal to 2.
But Solaris /usr/xpg4/bin/awk (since the patch for bugID 5074811) treats it like 1.

Last edited by MadeInGermany; 06-04-2013 at 06:28 PM..
This User Gave Thanks to MadeInGermany For This Post:
# 6  
Old 06-04-2013
I am unable to use 1 with awk. Instead, I have to use nawk
I am on SunOS 5.10
I can use nawk, but just wondering why awk is not working with 1 on my machine Smilie
# 7  
Old 06-04-2013
You mean /usr/bin/awk. It works with /usr/xpg4/bin/awk.

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