GREP [-ivl num] pattern
i       - ignore upper/lower case distinctions during comparisons
v       - invert the sense of matching, to select non-matching lines
l num   - list max <num> amounts of lines (20 by default)
pattern - a perl compatible regular expression (PCRE)
          ie: #channel2|user9|Cleanup or [a-z]{7}\\s[0-9]{2}
  
grep searches thru the service logfiles for lines matching "pattern".
