btest-rst-cmd [options] <command line>

    -d          Do not actually execute command; just format the command line.
    -h          Show this help.
    -r <file>   Insert <file> into output, rather than stdout.
    -o          Do not include command into output.
    -c <cmd>    Show <cmd> in output instead of the one actually executed.
    -f <filter> Run <filter> command on command output (or file) before including.
    -n <n>      Include only n lines of output, adding a [...] marker if there's more.