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12-26-2010

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Help with script or command to differentiate difference between two input file?

I got two file write now.
Input file 1:

Code:

>data_1
DSFDFDSGFDSGSGEGTRTRERPOYIORPGKKGDSPKFSDKFPSDKFSPFS
>data_34
WEEREREWREWOIQOPIEPDSKLFNDSFNSKNCASKJHDAFHAOUDFEOWWIOUFEWIUEWIRUEWIRUEWIORUEWOREWR
>data_21
ASDASDQWEQWRQERFWPOTGIUWEIPOFIOFDSNFKSJDNFSKDHFKDSJHFKDSJHF
>data_4
SDFDSFREREWPTIOEPOTIERWPOI
.
.

Input file 2:

Code:

>data_1
DSFDFDXXXXXXSGEGTRTRERPOYIORPGKKGDSPKFSDXXXXXXXXXXS
>data_34
WEEREREWREWOIQOPIEPDSKLFXXXXXXKNCASKJHDAFHAOUDFEOWWIOUFEWIUEWIRUEWIRUEWIORUEWOREWR
>data_21
ASDASDQWXXXXXXXXXXOTGIUWEIPOFIOFDSNFKSJDNFSKDHFKDSJHFKDSJHF
>data_4
SDFDSFREREWPTIOEPOTIEXXXXX
.
.

Desired output

Code:

      SGFDSG                            KFPSDKFSPFS

                        NDSFNS

        EQWRQERFWP

                    RWPOI
.
.

The word in BOLD is the difference part between input file 1 and input file 2.
I would like to export the word that only shown in input file 1 but not shown in input file 2 into another output file.
Thanks.

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