search data in a file


 
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# 1  
Old 12-26-2011
search data in a file

there is file abc.txt. I have to find out whether the below values is present in a file or not.
20110101
20110415
20110611
if present, add 1 to the date and store in a variable.
# 2  
Old 12-26-2011
Expecting this .. ?
Code:
lcnt=$(egrep "20110101|20110415|20110611" abc.txt | wc -l)
[ $lcnt -eq 3 ] && var=$(echo "$(date +%Y%m%d) + 1" | bc) || echo "Lines not present"

# 3  
Old 12-26-2011
Your requirement is not tacit.Please elaborate.
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