modify the utilities.py
modify the utilities
Revert "modify the utilities"

This reverts commit a34a53653fd8b2494793015f50798600a255c731.
Revert "modify the utilities.py"

This reverts commit bee87fb7dc8577e03fbcc84abe53ed7d4e33a677.
modify the cat utility

modify the cat utility that  fix the display bug of cat command
modify the cat utillity
Merge pull request #3 from franket268/mybranch

modify the cat utility