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setting environment variable in awk

 
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# 1  
Old 04-06-2009
setting environment variable in awk
Dear all,

I have a data sample...

Code:
 
Dose: Summed 
ROI: Bladder
**************************
Bin        Dose      Volume
001       0.700     100.000
002       0.715      99.998
168       3.142       0.368
169       3.157       0.338
170       3.171       0.292
 
Dose: Summed 
ROI: Rectum
**************************
Bin        Dose      Volume
001       0.233     100.00
003       0.357      96.725
152       9.582       0.481

to select everything between the strings Bladder & Rectum, I use the command
Code:
awk '/Bladder/,/Rectum/' inputfile > outputfile

SmilieIt works. So far so good...my problem however is that this step is not the 1st stage in my code. The 1st stage requires the user to input all the organs of interest into an array using
Code:
read -a structure

therefore "Bladder" is defined by ${structure[0]} and "Rectum" as ${structure[1]}. But the command
Code:
awk '/$[structure[0]}/,/${structure[1]}/' inputfile > outputfile

gives an outputfile with zero entriesSmilie.

Can someone tell me what I am doing wrong? Thanks.
# 2  
Old 04-06-2009
Try this:

Code:
awk '$0 ~ s1, $0 ~ s2
' s1="${structure[0]}" s2="${structure[1]}" \
inputfile > outputfile

# 3  
Old 04-06-2009
it worked. thanks.Smilie
 
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