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awk script replace positions if certain positions equal prescribed value

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Top Forums Shell Programming and Scripting awk script replace positions if certain positions equal prescribed value
# 1  
Old 09-14-2010
Data awk script replace positions if certain positions equal prescribed value
I am attempting to replace positions 44-46 with YYY if positions 48-50 = XXX.

Code:
awk -F "" '{if (substr($0,48,3)=="XXX") $44="YYY"}1' OFS="" $filename > $tempfile

But this is not working, 44-46 is still spaces in my tempfile instead of YYY. Any suggestions would be greatly appreciated.
Last edited by Scott; 09-14-2010 at 06:09 PM.. Reason: Please use code tags
# 2  
Old 09-14-2010
Can you show sample input?
# 3  
Old 09-14-2010
MySQL
sure can

before:

Code:
RR  20100828 00599 0001230111 +00000000123     XXX 100111
SS  20100828 00599 0001230111 +00000000123     XXX 100222
TT  20100828 00599 0001230111 +00000000123     ABC 100333

hoping for after:

Code:
RR  20100828 00599 0001230111 +00000000123 YYY XXX 100111
SS  20100828 00599 0001230111 +00000000123 YYY XXX 100222
TT  20100828 00599 0001230111 +00000000123     ABC 100333

*used the code tags to keep the spacing.
# 4  
Old 09-14-2010
Code:
# cat file
RR  20100828 00599 0001230111 +00000000123     XXX 100111
SS  20100828 00599 0001230111 +00000000123     XXX 100222
TT  20100828 00599 0001230111 +00000000123     ABC 100333
# awk '{$0=(substr($0,48,3)=="XXX")?substr($0,0,43)"YYY"substr($0,47):$0}1'  file
RR  20100828 00599 0001230111 +00000000123 YYY XXX 100111
SS  20100828 00599 0001230111 +00000000123 YYY XXX 100222
TT  20100828 00599 0001230111 +00000000123     ABC 100333

# 5  
Old 09-14-2010
CPU & Memory
cat file.txt
Code:
RR  20100828 00599 0001230111 +00000000123     XXX 100111
SS  20100828 00599 0001230111 +00000000123     XXX 100222
TT  20100828 00599 0001230111 +00000000123     ABC 100333
RR  20100828 00599 0001230111 +00000000123     XXX 100111
SS  20100828 00599 0001230111 +00000000123     XXX 100222
TT  20100828 00599 0001230111 +00000000123     DEF 100333
RR  20100828 00599 0001230111 +00000000123     XXX 100111
SS  20100828 00599 0001230111 +00000000123     XXX 100222
TT  20100828 00599 0001230111 +00000000123     DDD 100333

Code:
awk '{ if ( substr($0,48,3) == "XXX" ) { print substr($0,0,43) "YYY" substr($0,47)} else { print substr($0,0,43) "   " substr($0,47) } }' file.txt

Code:
RR  20100828 00599 0001230111 +00000000123 YYY XXX 100111
SS  20100828 00599 0001230111 +00000000123 YYY XXX 100222
TT  20100828 00599 0001230111 +00000000123     ABC 100333
RR  20100828 00599 0001230111 +00000000123 YYY XXX 100111
SS  20100828 00599 0001230111 +00000000123 YYY XXX 100222
TT  20100828 00599 0001230111 +00000000123     DEF 100333
RR  20100828 00599 0001230111 +00000000123 YYY XXX 100111
SS  20100828 00599 0001230111 +00000000123 YYY XXX 100222
TT  20100828 00599 0001230111 +00000000123     DDD 100333

# 6  
Old 09-14-2010
if no care of the output format.

Code:
awk '$6=="XXX" {$6="YYY" FS $6}1' infile

# 7  
Old 09-14-2010
Quote:
Originally Posted by sol_nov
Code:
awk '{ if ( substr($0,48,3) == "XXX" ) { print substr($0,0,43) "YYY" substr($0,47)} else { print substr($0,0,43) "   " substr($0,47) } }' file.txt

Let's remove useless code Smilie
Code:
awk '{ if ( substr($0,48,3) == "XXX" ) { print substr($0,0,43) "YYY" substr($0,47)} else {print} }' file.txt

I hope you'll catch the mistake.

---------- Post updated at 10:21 PM ---------- Previous update was at 10:17 PM ----------
Quote:
Originally Posted by rdcwayx
if no care of the output format.

Code:
awk '$6=="XXX" {$6="YYY" FS $6}1' infile

And if we care about output format Smilie
Code:
awk '$6=="XXX" {$1=$1 FS;$6="YYY" FS $6}1' file
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