while read -r name number
do
while read -r NAME NUM
do
if NAME is equal name
then
echo name NUM number
done < "file2"
done < "file1"
Basically, this pseudo code is reading the first file and grabbing the two variables, and for each line read from the first file, it's checking every line in the second file and, if the name matches, it's print the output in the format you specified to stdout.
If you need Monday to equal Mon, etc, you can do that pretty easily with sed or even cut, if you know you only need a certain number of characters in your abbreviation (like if your standard is always 3 - Monday = Mon, Tuesday = Tue, etc)
Hope that helps. Give it a shot and see what you can do with it. Remember, the code posted is pseudo-code which means it's not entirely "correct" (won't just work if you cut-and-paste it) and is meant to demonstrate a principal and provide a means to reaching the answer rather than being the answer itself.
Best wishes,
, Mike
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