Continuously Watch a Text File in UNIX
Contributed by qmchenry 
Tagged: UNIX Using the tail command with an option, the file will remain open and you will see any additional output written to the file. This is especially useful for watching log files.
Basic structure of the tail command is like this:
tail -f filename
For example, to monitor any new output to /var/log/messages:
tail -f /var/log/messages
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Name said on January 8, 2010
just what I wanted. Thanks
Dan said on June 24, 2011
Wow… I wish I had found this a while ago.