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Issue with ls command inside script

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# 1  
Old 06-24-2013
Issue with ls command inside script
Hi ,
DIR1 has only one file with .txt extension , trying to get the size of that file using the following script
Code:
#!/bin/ksh
foldr_1="/etc/DIR1"
 #echo "$foldr_1"
 
  sze_fdr1=$(ls -ltr foldr_1/*.txt |awk '{ print $5 }')
  
  echo "$sze_fdr1"
  
After executing the above script getting the following error
foldr_1/*.txt: No such file or directory

please help
# 2  
Old 06-24-2013
A dollar prefix is missing for foldr_1 in the ls statement line
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