First off thank you for any help.
Here is the problem. I have two text files that fit the same format. The first I created using an ls -d command and then with the help of the forums ran awk resulting in the fallowing output.

W00CHZ0103345-I1CZ44
W00E6S1016722-I01JW159
W00E6S1016722-I01JW160
W00E6S1016722-I01JW161
W00EGS10125151-I01JW176
W00EGS10125151-I01JW177
W00EGS10125151-I01JW178
W00EGS10125151-I01JW179
W00EGS10125151-I01JW180
W00EGS1012593-I00EGS1017114

I have a second text file whose format i was trying to successfully managed to match. Here it is.

W00CHZ0103345-I1CZ44
W00EGS1016051-I00EGS1016053
W00EGS1016054-I00EGS1016056
W00EGS1016057-I00EGS1016059
W00EGS1016060-I00EGS1016062
W00EGS1016181-I1PD10388
W00EGS1016199-I00EGS1016201
W00EGS1016202-I1GS65488
W00EGS1016210-I00EGS1016212
W00EGS1016213-I00EGS1016216

Now these lists are nearly 10,000 lines long and what i need to do is compare them and see what only occurs on the second list. I have tried sorting and using uniq and diff and everything else that i can think of but was unable to generate a list of the lines that only appear in txt2. That being said if there were lines that appeared in the first text and not the second i would want to know but i would need to know from which list it came.

Please help if you can.

Thank you

Look at the comm utility.

i looked at comm and I can't seem to get my desired output.
here is what i am trying maybe someone can help.

first i run sort text1.txt > newtext1.txt

then the same with text2.txt

then i try this:
comm -3 newtext1.txt newtxt2.txt

I have tried a variation of comm -1, comm -2, -1 -2, -3, pretty much everthing that i can think of but i am still getting output that i can find in both files. I want just the lines that occur in only newtext1.txt

comm -23 newtext1. newtxt2.txt

so i tried using the comm -23 file1 fil2 per the last suggestion and still am not getting the desired result. Using bbedit i can look and do a line count and there is a difference of appx 800 files from file1 to file2. and so that is the output that i am expecting. Now i have tried sorting the files before running comm and outputting that sort to new files, on which i do the comm. there are two strange things happening here one after comparing my new files by eye after running sort i can see that they are not sorted the same way, and secondly after running comm -23 etc. i get a reurn of one entry which i cant find in either file. Any help is appreciated

Can you pinpoint the sort discrepancy, i.e. prune it down to a list of, say, three lines which sort differently? Do you have locales at play? (Still, comm and sort should obey the same locale; but if they don't, what you describe sort of makes sense.) See also the locale manual page. See if adding LC_ALL=C helps.

LC_ALL=C sort file1 >sorted1.lc_all=c
diff sorted1.lc_all=c newtext1.txt