Remove RCov *.html files in /builds for Jenkins.

remove_rcov_reports.sh

#!/bin/sh
# This simple shell script removes intermediate HTML files used by RCov and RubyMetrics plugin.
# RubyMetrics plugin extract data from HTML and save them to build.xml, so they are not used after tests are done.
# The HTML files are generated per tested file, then its number becomes enormous.
# Execute this script by cron or something to clean them up.
set -e

# Set this variable to the directory you want to cleanup
# example: /var/lib/jenkins/jobs/JOB_NAME/builds
BUILDS_DIR=''

[ -z $BUILDS_DIR ] && echo '$BUILDS_DIR is not set' && exit 1

IFS="
"
for old_dir in $(\ls -1Fu "$BUILDS_DIR" | awk -v curdir="$BUILDS_DIR/" 'match($0, "/$"){count++; if (count > 1) { print curdir $0 } }'); do
    find $old_dir -maxdepth 1 -name "*.html" -delete
done