Filter requests to Rails (2.3.x) application by IP address

log_filter.sh

#!/bin/bash
# Filter requests to Rails application by IP address
#
# Usage:
#   tail -f log/production.log | log_filter.sh [IP]
#
#   By default tries to obtain current IP address from $SSH_CLIENT or by querying http://ifconfig.me
if [[ $# -eq 0 ]]; then
  if [[ -z $SSH_CLIENT ]]; then
    ip=$(curl -s http://ifconfig.me)
  else
    ip=$(echo $SSH_CLIENT | sed -e "s/ .*//")
  fi
else
  ip=$1
fi

output=false

while read line; do
  if [[ $line =~ ^Processing ]]; then
    if [[ $line =~ $ip ]]; then
      output=true
    else
      output=false
    fi
  fi
  $output && echo $line
done

try this, should be a lot faster https://gist.github.com/2851420

@mpapis That would show only single lines, but the goal is to show requests in full (logged in multiple lines)

updated with awk and example of my log file, seams like we have different formats

you're right, this works for Rails 2.3.x log format