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Old 06-14-2013, 06:00 PM   #1
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Registered: Jun 2013
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awk issue with adding formula columns?

cat test.csv

137,597,LG1,20000,Group 1-1,true
1370,8,JBC,2800000,Group 1-1,false

awk 'BEGIN {FS=OFS=","} {if (NR!=1) print $1="HelloWorld1",$2="HelloWorld2",$3=((($4/100)+10)),$4,$5,$6,$7,$8}' test.csv
,,lloWorld1,HelloWorld2,210,20000,Group 1-1,true
,,lloWorld1,HelloWorld2,28010,2800000,Group 1-1,false

I am missing the first two letters

I want the output as below:

HelloWorld1,HelloWorld2,210,20000,Group 1-1,true
HelloWorld1,HelloWorld2,28010,2800000,Group 1-1,false

Could you please help.

Thanks a lot
Old 06-14-2013, 07:55 PM   #2
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Registered: Aug 2004
Location: Sydney
Distribution: Centos 6.9, Centos 7.3
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Works for me.
Can you check if you've got any invisible ctrl chars in the real file eg use od cmd or in vi/vim use ':set list'.
Also show version of awk 'awk --version'
awk --version
GNU Awk 3.1.7

 awk 'BEGIN {FS=OFS=","} {if (NR!=1) print $1="HelloWorld1",$2="HelloWorld2",$3=((($4/100)+10)),$4,$5,$6,$7,$8}' t.t
HelloWorld1,HelloWorld2,210,20000,Group 1-1,true,,
HelloWorld1,HelloWorld2,28010,2800000,Group 1-1,false,,
Please use code tags for posting code/data
Old 06-15-2013, 02:29 AM   #3
Registered: Jul 2004
Location: Chennai, India
Distribution: UBUNTU 5.10 since Jul-18,2006 on Intel 820 DC
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Why didn't you just use:
awk 'BEGIN {FS=OFS=","} {if (NR!=1) print "HelloWorld1","HelloWorld2",(($4/100)+10),$4,$5,$6,$7,$8}' test.csv


Last edited by AnanthaP; 06-15-2013 at 02:32 AM.
Old 06-15-2013, 04:06 AM   #4
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There are a few things to note here:

1. AnanthaP is quite correct that if you do not use the first 2 fields, then no need to set them.

2. chrism01ś point about the file probably being created in Windows would mean erroneous items at the end of the line causing issues. This one can be overcome by either, running dos2unix over the file
or simply setting the record separator (RS) to use the windows setting of ¨\n\r¨

3. You have happily used the process OFS=FS=¨,¨, so why not use $1=$2=¨HelloWorld¨


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