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IkelcaFlag for Canada

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Can someone please help explain this command in linux?

I'm not farmilar with linux commands and dont know python at all
so when i try to run this command, it keeps giving me error $3: Ambiguous
can some one help explain what is this command does?
specially the "$" part

ls -l $2
./Python-2.5.1/python Python-2.5.1/score.py Python-2.5.1/standard.txt $1 > $3
mv $3 $2/$3
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Lee W, MVP
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then what is $1 and $2?
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Did you find the commands in a shell script ? (text file)

Are you typing it line by line ?