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While loop for comparison

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# 1  
Old 05-11-2013
While loop for comparison
hi all,
i have two files:
test1 contains : one two three four five (on separate lines)
test2 contains: one ten nine (on separate lines)

I want to compare two files, test1 against test2. if any word from test1 does not match test2 display it. can someone help me with a while loop on this.

thanks
Last edited by sbk785; 05-11-2013 at 11:57 PM.. Reason: formatting
# 2  
Old 05-12-2013
This is not the appropriate forum for homework assignments.

Why would you insist on a while loop to perform comparisons? A very simple awk script would be easier (and more efficient than many common while loops that would perform this task).
# 3  
Old 05-12-2013
thanks for your reply but for some reason my while read command doesnt seem to work ... not sure where i am getting it wrong
# 4  
Old 05-12-2013
Is this a homework assignment?

What have you tried so far?
# 5  
Old 05-13-2013
hi Don

here it is:

Code:
while read -r line
do
for i in $(cat test2)
do
if [ $line != $i ];
then
echo " The different value us $line"
fi
done
done < test1

i do not get the correct output. As per the my expectation i shud be getting all line from test1 except for the word "one". can you please help me correct the code. I am trying to extract lines from test1 that do not match lines in test2.

thanks in advacne
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