greping last occurrence of the searched string

Shell Programming and Scripting
1

Hello,

I have active log file i want to grep the last occurrence of the word in that log file the log file gets on increasing and increasing i want to fetch it from live file.

Please guide me, Thanks in advance

2

try tail -f : read the tail man page first!

tail -f /directory/logfile | grep 'some words'
3

but what if that word is comes 2 times then i only want the last occurrence

4 
tac somefile | grep -m 1 someword
5

Thks gonis for your valuable input...
many many thx once again