settting idle timeout or launch command for pure-ftpd.

[j...@jonathanleslie.com]

pure-ftpd has a parameter -I which should change the timeout period for idle from 15 minutes to something else (e.g. "-I 99"  for 99 minutes.) How can I set it so that when pureadmin launches pure-ftpd it does it with the "-I 99" option?   In lieu of that how can I launch pure-ftpd directly from the command line?  whenever I do so it fails, even if I sudo it. 

TIA, 

Jleslie