Created
October 13, 2012 18:07
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Bash script to parse Apache log for a count of RSS subscribers and email it to you
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#!/bin/sh -e | |
# --- Required variables --- | |
RSS_URI="/rss.xml" | |
MAIL_TO="your@email.com" | |
LOG_FILE="/home/$USER/var/log/lighttpd/access.log" | |
LOG_DATE_FORMAT="%d/%b/%Y" | |
# --- Optional customization --- | |
MAIL_SUBJECT="RSS feed subscribers" | |
# Date expression for yesterday | |
DATE=$(($(date +%s) - 86400)) | |
# Locale for printf number formatting (e.g. "10000" => "10,000") | |
LANG=en_US | |
# Date format for display in emails | |
HUMAN_FDATE=`date -r "$DATE" "+%Y-%m-%d"` | |
# --- The actual log parsing --- | |
LOG_FDATE=`date -r "$DATE" "+${LOG_DATE_FORMAT}"` | |
DAY_BEFORE_FDATE=`date -r $(($DATE - 86400)) "+${LOG_DATE_FORMAT}"` | |
# Unique IPs requesting RSS, except those reporting "subscribers": | |
IPSUBS=`fgrep "$LOG_FDATE" "$LOG_FILE" | fgrep " $RSS_URI" | egrep -v '[0-9]+ subscribers' | cut -d' ' -f 1 | sort | uniq | wc -l` | |
# Google Reader subscribers and other user-agents reporting "subscribers" and using the "feed-id" parameter for uniqueness: | |
# `tac` replacement per http://tipstricks.itmatrix.eu/?p=305 | |
GRSUBS=`egrep "($LOG_FDATE|$DAY_BEFORE_FDATE)" "$LOG_FILE" | fgrep " $RSS_URI" | egrep -o '[0-9]+ subscribers; feed-id=[0-9]+' | sort -t= -k2 -s | awk '{print NR,$0}' | sort -nr | sed 's/^[0-9]* //' | uniq -f2 | awk '{s+=$1} END {print s}'` | |
# Other user-agents reporting "subscribers", for which we'll use the entire user-agent string for uniqueness: | |
OTHERSUBS=`fgrep "$LOG_FDATE" "$LOG_FILE" | fgrep " $RSS_URI" | fgrep -v 'subscribers; feed-id=' | egrep '[0-9]+ subscribers' | egrep -o '"[^"]+"$' | sort -t\( -k2 -sr | awk '!x[$1]++' | egrep -o '[0-9]+ subscribers' | awk '{s+=$1} END {print s}'` | |
REPORT=$( | |
printf "Feed stats for $HUMAN_FDATE:\n\n" | |
printf "%8d Google Reader subscribers\n" $GRSUBS | |
printf "%8d subscribers from other aggregators\n" $OTHERSUBS | |
printf "%8d direct subscribers\n" $IPSUBS | |
echo "--------" | |
printf "%8d total subscribers\n" $(($GRSUBS + $OTHERSUBS + $IPSUBS)) | |
) | |
echo "$REPORT" | |
echo "" | |
echo "Also emailed to $MAIL_TO." | |
echo "$REPORT " | mail -s "[$HUMAN_FDATE] $MAIL_SUBJECT" $MAIL_TO |
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