usage: ftailf [-t] ['[/pattern/[i]] [perl-code]'] file
options: -t  flag each line with a time stamp
examples: 
  ftailf ~/Mail/.log
  ftailf '/ssh/' /var/adm/messages
  ftailf -t watchlog
  ftailf '/spam/i system qq[sendmsg -qfs "$_" framstag\@bofh]' syslog&