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awk variable substitution problem

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# 1  
Old 05-13-2014
Wrench awk variable substitution problem
Hi

I am having a file like this

##############################
Code:
j=1
while [[ $j -le $COUNT ]]
do 
temp_5=MODULE$j

awk '
$1 ~ /'${!temp_5}'/ {
do something }1'  file1 > file2 

((j = j +1 ))

done

###################

Setting the variables like this

Code:
setenv MODULE1 mod1
setenv MODULE2 mod2 
setenv MODULE3 mod3

My problem is that the '${!temp_5}' substitution is not at all happening and with the help of awk can we write to the same file ...

If I am changing and giving variable like this '$MODULE1' then its taking ...
but I need to increment $j also to get the required variables
# 2  
Old 05-13-2014
Variable expansion will not happen if you use single quotes. Try using double quotes.
# 3  
Old 05-13-2014
Try:
Code:
awk -v t5="${!temp_5}" '$1 ~ t5 {do something }1'  file1 > file2

# 4  
Old 05-13-2014
awk variable substitution
I tried with double quotes "" but not working

Code:
j=1 while [[ $j -le $COUNT ]] do  temp_5=MODULE$j  awk ' $1 ~ /"${!temp_5}"/ { do something }1'  file1 > file2   ((j = j +1 ))  done

# 5  
Old 05-13-2014
You may also want to change the single quotes the awk. Not just the one for ${!temp_5}.
# 6  
Old 05-13-2014
Hi Scrutinizer ,

I tried what you suggested but its not working

Code:
j=1 

while [[ $j -le $COUNT ]]
do

  temp_5=MODULE$j

awk -v  t5="${!temp_5}" '$1 ~ t5 {
    add = 1
}
add && /[)];/ {
    sub(/[)];/, ",.DFT_ClkEnScanIn1 ( DFT_ClkEnScanIn1 ) , .scan_clock_en ( DFT_ClkEnScanOut1 ) , .DFT_ClkgenScanEnable ));")
    add = 0
}
1'   modem5_2_top_aapd_wrapper.prescan.v > temp20.v

((j = j +1))

done

---------- Post updated at 01:15 PM ---------- Previous update was at 01:09 PM ----------

Hi Chacko

tried with double quotes but getting syntax error

Code:
j=1 
while [[ $j -le $COUNT ]]
do
  temp_5=MODULE$j
awk -v  t5="${!temp_5}" "$1 ~ t5 {
    add = 1
}
add && /[)];/ {
    sub(/[)];/, ",.DFT_ClkEnScanIn1 ( DFT_ClkEnScanIn1 ) , .scan_clock_en ( DFT_ClkEnScanOut1 ) , .DFT_ClkgenScanEnable ));")
    add = 0
}
1"   modem5_2_top_aapd_wrapper.prescan.v > temp20.v

((j = j +1))

done

Last edited by Scrutinizer; 05-13-2014 at 04:56 AM..
# 7  
Old 05-13-2014
@kshitij: what is not working?
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