Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Replace a field where values are null in a file.

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Replace a field where values are null in a file.
# 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:
rudoraj
# 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:
Jotne
# 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.
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to replace the field values, which are greater than the specified value with TRUE?

I have a csv file as given below, org1 org2 org3 org4 org5 gene1 100 80 90 80 150 gene2 30 70 50 50 115 gene3 40 120 60 40 105 gene4 20 72 40 60 20 I need to replace the fields are having values greater than 100 with "TRUE". I used the following commands to replace... (6 Replies)
Discussion started by: dineshkumarsrk
6 Replies

2. Shell Programming and Scripting

Replace null values with dot using awk

Using awk I am trying to replace all blank or null values with a . in the tad delimited input. I hope the awk is close. Thank you :). input name test sam 1 liz 2 al 1 awk awk 'BEGIN{FS=OFS="\t"}{for(i=1;++i<NF;)$i=$i?$i:"."}1'input awk 'BEGIN { FS =... (6 Replies)
Discussion started by: cmccabe
6 Replies

3. Shell Programming and Scripting

Multiple columns replace with null values.

I am trying to replace the partcular columns(Col3,col5,col20,col44,col55,co56,col59,col60,col61,col62,col74,col75,col88,col90,col91,col93,col94,col95) with empty Input file Col1,col2,col3,col4,col5------,col100 1,2,3,4,5,---------,100 3,4,5,6,7,---------,300 Output : ... (3 Replies)
Discussion started by: onesuri
3 Replies

4. Shell Programming and Scripting

Replace null values in csv with zero

Hi, i have another issue: i have three files: FILE 1 ServiceEventHandler, Processed,Percentage 5285337,100% FILE 2 Wallet, Processed,Percentage 5285337,100% (1 Reply)
Discussion started by: reignangel2003
1 Replies

5. Shell Programming and Scripting

Find a blank field and replace values to NA

Hi All, i have a file like col1 col2 col3 13 24 NA 12 13 14 11 12 13 14 22 NA 18 26 NA in this file if i found "NA" other values in the line are also replace by NA Could you help me! (7 Replies)
Discussion started by: Shenbaga.d
7 Replies

6. Shell Programming and Scripting

To find char field and replace null

hi, i having a file with | seperated in which i need to search char in 3rd column and replace with null. i need to replace only the coulmn where character occurs in 3rd field for eg: file1.txt xx|yy|xx|12 output file: xx|yy||12 (5 Replies)
Discussion started by: rohit_shinez
5 Replies

7. Shell Programming and Scripting

File values alwaya null

Hi All , below is my shell program. !/bin/sh set -x #---------------------------------------------------------------------------------------- # Program : weekly_remove_icd_file.sh # Author : # Date : 04/06/2013 # Purpose : Execute the script to... (3 Replies)
Discussion started by: krupasindhu18
3 Replies

8. Shell Programming and Scripting

Replace 4th field if null

Hi .. Can some one please suggest me how to replace 4th field(column) of a .csv file with "NA" if it is null. Input file data: |A|21|B1||1.1| |A|21|C|RAGH|1.1| |A|21|D1||1.1| |A|21|C|YES|1.1 Expected Output |A|21|B1|NA|1.1| |A|22|C|RAGH|1.1| |B|23|D1|NA|1.1| |A|24|C|YES|1.1| Thank... (4 Replies)
Discussion started by: pasupuleti81
4 Replies

9. Shell Programming and Scripting

identifying null values in a file

I have a huge file with 20 fileds in each record and each field is seperated by "|". If i want to get all the reocrds that have 18th or for that matter any filed as null how can i do it? Please let me know (3 Replies)
Discussion started by: dsravan
3 Replies
Login or Register to Ask a Question