Files have same size

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http://www.unix.com – Hello, I want remove files have same size in a directory. this command only find this files. Code: ls -l | awk '$1!~/^d/{if(size[$5]!=""){ print}size[$5]=$8}' I want to remove the files of the same size. samples: 5 files are same size. I want to keep only first file. Thank you very much for your help. (HowTos)