Easy IIS log file format specification for goaccess.

example.sh

goaccess -f u_ex150629.log --log-format "$(cat u_ex150629.log | ./goiisformat.sh)" --date-format '%Y-%m-%d' --time-format '%H:%M:%S'

goiisformat.sh

#!/usr/bin/env sh

while read line; do
  if [[ $line == \#Fields:* ]]; then
    line=${line/\#Fields: /}
    line=${line/date/%d}
    line=${line/time/%t}
    line=${line/s-sitename/%^}
    line=${line/s-computername/%^}
    line=${line/s-ip/%^}
    line=${line/cs-method/%m}
    line=${line/cs-uri-stem/%U}
    line=${line/cs-uri-query/%^}
    line=${line/s-port/%^}
    line=${line/cs-username/%^}
    line=${line/c-ip/%h}
    line=${line/cs-version/%H}
    line=${line/cs(User-Agent)/%u}
    line=${line/cs(Cookie)/%^}
    line=${line/cs(Referer)/%R}
    line=${line/cs-host/%^}
    line=${line/sc-status/%s}
    line=${line/sc-substatus/%^}
    line=${line/sc-win32-status/%^}
    line=${line/sc-bytes/%b}
    line=${line/cs-bytes/%^}
    line=${line/time-taken/%L}
    echo $line
    exit;
  fi
done

My 2 cents
goaccess --log-format '%d %t %^ %v %^ %m %U %q %^ %e %h %^ %u %R %^ %s %^ %^ %b %^ %L' --date-format '%Y-%m-%d' --time-format '%H:%M:%S' -o stats.html -f *.log
for the following header
date time s-sitename s-computername s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs-version cs(User-Agent) cs(Referer) cs-host sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken