When a command is completed, RRDtool will print the string 'C<OK>',
followed by timing information of the form B<u:>I<usertime>
B<s:>I<systemtime>. Both values are the running totals of seconds since
RRDtool was started. If an error occurs, a line of the form 'C<ERROR:>
I<Description of error>' will be printed instead. B<RRDtool> will not abort,
When a command is completed, RRDtool will print the string 'C<OK>',
followed by timing information of the form B<u:>I<usertime>
B<s:>I<systemtime>. Both values are the running totals of seconds since
RRDtool was started. If an error occurs, a line of the form 'C<ERROR:>
I<Description of error>' will be printed instead. B<RRDtool> will not abort,