Funny way to print lines in reverse order

This is completely something you need see at least once in your live to know what you never should do ;).

The complete code examples bellow are taken from the original post at Print lines in reverse order

The recommended way:

$ tac file

The more funny way to achieve the same result ;)

#example1
$ cat -n file | sort -k1,1rn | cut -f 2-

#example2
$ perl -e 'print reverse <>' file

#example3; sorry, this one is not a one line command
$ i=0
$ while IFS= read -r arr[i]; do ((i++)); done < file
$ for((j=i-1;j>=0;j--)); do printf "%s\n" "${arr[$j]}"; done