--from-code, -f encoding
       Convert characters from encoding.

--to-code, -t encoding
       Convert characters to encoding. If not specified the encoding corresponding to the current locale
       is used.

--list, -l
       List known coded character sets.

-c     Omit invalid characters from output.

--output, -o file
       Specify output file (instead of stdout).

--silent, -s
       Suppress warnings, but not errors.

--verbose
       Print progress information.

--help, -?
       Give help list.

--usage
       Give a short usage message.

--version, -V
       Print program version.