[CentOS] Remounting a USB flash drive

Fri Aug 1 00:43:15 UTC 2008
MHR <mhullrich at gmail.com>

I've noticed that once I right click on my flash drive icon and umount
it, in order to remount it I have to unplug it and then plug it back

Is there a command that will accomplish the same task without the
unplug and plug back in physics?