Clean those annoying and outdated journald logs

clean-journald-logs

#!/bin/bash

#	= ^ . ^ =

# 0700 root:root clean-journald-logs
# Delete the journald logs from /var/log/journal from the last years
#
# Its best to run this via ionice(1)
# ionice -c 3 clean-journald-logs
#
# Andres Hernandez - tonejito
#
# This script is released under the BSD license

# Current date
DATE=$(date '+%Y%m%d-%H%M')
LOG=./clean-$DATE.log
LOG0=./clean-$DATE.0

# Days since new year
DAYS=$(date '+%j')
let "DAYS -= 1"

# Truncate (our) log files before using
for FILE in $LOG $LOG0
do
  truncate --size 0 $FILE
done

# Common flags
PRINTF_FORMAT='%T+\t%s\t%#m\t%u:%g\t%p\n'
XARGS_OPTS="-0 -r "
XARGS_TARGET="rm"

# Bail out if we run this on january 1st xD
test -n "$DAYS" -a $DAYS -gt 0 || exit -1

# Magic
find /var/log/journal/????????????????????????????????/ \
  -type f -mtime +$DAYS -daystart \
  -fprint0 $LOG0 \
  -printf $PRINTF_FORMAT | sort -k 1,1 >> $LOG
xargs $XARGS_OPTS $XARGS_TARGET < $LOG0

test -e $LOG0 && rm $LOG0

exit