| #!/bin/sh |
| |
| # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Usage example: "kernel_log_collector.sh XXX YYY" |
| # This script searches logs in the /var/log/messages which have the keyword XXX. |
| # And only those logs which are within the last YYY seconds of the latest log |
| # that has the keyword XXX are printed. |
| |
| # Kernel log has the possible formats: |
| # 2013-06-14T16:31:40.514513-07:00 WARNING kernel: [ 2.682472] MSG MSG ... |
| # 2013-06-19T20:38:58.661826+00:00 INFO kernel: [ 1.668092] MSG MSG ... |
| |
| if [ $# -ne 2 ]; then |
| echo "Usage: kernel_log_collector.sh <search key> <time duration>" >&2 |
| exit 1 |
| fi |
| |
| search_key="$1" |
| time_duration="$2" |
| msg_pattern="^[0-9-]*T[0-9:.+-]* [A-Z]* kernel" |
| |
| die() { |
| echo "kernel_log_collector: $*" >&2 |
| exit 1 |
| } |
| |
| get_timestamp() { |
| timestamp="$(echo "$1" | cut -d " " -f 1)" |
| timestamp="$(date -d "${timestamp}" +%s)" || exit $? |
| echo "${timestamp}" |
| } |
| |
| last_line="$(grep -a "${msg_pattern}" /var/log/messages | \ |
| grep -- "${search_key}" | tail -n 1)" |
| |
| if [ -n "${last_line}" ]; then |
| if ! allowed_timestamp="$(get_timestamp "${last_line}")"; then |
| die "coule not get timestamp from: ${last_line}" |
| fi |
| : $(( allowed_timestamp -= time_duration )) |
| grep -a "${msg_pattern}" /var/log/messages | grep -- "${search_key}" | |
| while read -r line; do |
| if ! timestamp="$(get_timestamp "${line}")"; then |
| die "could not get timestamp from: ${line}" |
| fi |
| if [ "${timestamp}" -gt "${allowed_timestamp}" ]; then |
| echo "${line}" |
| fi |
| done |
| fi |
| |
| echo "END-OF-LOG" |
| |