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#!/bin/bash
if ! mountpoint -q /mnt ; then
echo "I do not seem to see a Mageia install mounted on /mnt. You need to mount it first!" >&2
exit 1
fi
if [ ! -f /mnt/etc/machine-id ]; then
echo "Cannot find machine-id file (/mnt/etc/machine-id)" >&2
exit 1
fi
MID=$(cat /mnt/etc/machine-id)
echo
echo "Found machine-id: $MID"
if [ ! -d /mnt/var/log/journal/$MID ]; then
echo "Cannot find journal log directory (/mnt/var/log/journal/<machine-id>)" >&2
exit 1
fi
TIMEFRAME=24
if [ -n "$1" ]; then
NEWTIMEFRAME=$(( 0 + $1 ))
if [ $NEWTIMEFRAME -gt 0 ]; then
TIMEFRAME=$NEWTIMEFRAME
fi
fi
SINCE="$(LC_ALL=c date --date=$TIMEFRAME' hours ago' +'%F %T')"
echo "Will collect logs from the last $TIMEFRAME hour(s)"
echo " NB give numeric argument to override capture period"
TEMPFILE=$(mktemp /tmp/grabjournallogs.XXXXXX)
echo -n "Extracting logs... "
journalctl -D /mnt/var/log/journal/$MID --since "$SINCE" -o short >$TEMPFILE
echo "done"
if [ $(cat $TEMPFILE | wc -l) -lt 2 ]; then
rm -f $TEMPFILE
echo >&2
echo "Cannot find any logs. Consider increasing the capture period by passing a" >&2
echo "numeric argument larger than $TIMEFRAME." >&2
exit 1
fi
echo -n "Compressing logs... "
cat $TEMPFILE | xz >/journallogs.xz
rm -f $TEMPFILE
echo "done"
echo
echo "Your logs have been extracted to the file 'journallogs.xz'"
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