For our own format with real ip (from proxy forwarded for header) and upstream response times: log_format combined_w_timing '$http_x_forwarded_for [$remote_addr] - $remote_user [$time_local] ' '"$request" $status $body_bytes_sent ' '"$http_referer" "$http_use...

Validate Brazilian monetary values. Can be easily addapted to other countries.

finds patterns like ..(phl1|aus2) in the log, trying to find all host names.

Matches Date & time in group 1, and the PID in group 4. will update to match computer name and user names too when i can.

used to pull Date, time and PID from linux log files

One liner