Usage: compress [-dfvcVr] [-b maxbits] [file ...]

       -d   If given, decompression is done instead.
       -c   Write output on stdout, don't remove original.
       -b   Parameter limits the max number of bits/code.
       -f   Forces output file to be generated, even if one already.
            exists, and even if no space is saved by compressing.
            If -f is not used, the user will be prompted if stdin is.
            a tty, otherwise, the output file will not be overwritten.
       -v   Write compression statistics.
       -V   Output vesion and compile options.
       -r   Recursive. If a filename is a directory, descend
            into it and compress everything in it.