showlog



#!/bin/sh
#
# /usr/local/sbin/showlog
# Copyright 2002-2006 Jonas Smedegaard <dr@jones.dk>
#
# $Id: showlog,v 1.12 2007-10-23 21:14:51 jonas Exp $
#
# Show topic-specific log entries
#

set -e

usage() {
    echo "Usage: $(basename $0) ftp|web|weberror|websuexec|mail|system [<keyword> [<keyword>...]]"
    exit 1
}

exit1() {
    echo "Error: $1"
    echo "Exiting..."
    exit 1
}

cat_logs()  {
    rootdir="$1"
    pattern="$2"
    howmany="${3:-2}"

    if [ "$howmany" != "all" ]; then
        files="$(find $rootdir -mindepth 1 -maxdepth 1 -regextype posix-egrep -regex "$pattern" -type f -follow | sort -nr | tail -n "$howmany")"
    else
        files="$(find $rootdir -mindepth 1 -maxdepth 1 -regextype posix-egrep -regex "$pattern" -type f -follow | sort -nr)"
    fi
    for file in $files; do
        case $file in
            *.gz)
            zcat $file;;
            *.bz2)
            bzcat $file;;
            *)
            cat $file;;
        esac
    done
}

tail_history="${tail_history:-500}"

target=$1
shift || exit1 "Missing argument"

case "$target" in
    ftp)
    log="xferlog"
    ;;
    web)
    logroot="/var/log/apache"
    log="access.log"
    ;;
    weberror|weberrors)
    logroot="/var/log/apache"
    log="error.log"
    ;;
    websuexec)
    logroot="/var/log/apache"
    log="suexec.log"
    ;;
    mail)
    log="mail.log"
    ;;
    system)
    log="syslog"
    ;;
    *)
    usage
    ;;
esac
case "$target" in
    ftp|mail|system)
    logroot="/var/log"
    ;;
    web|weberror|weberrors|websuexec)
    logroot="/var/log/apache"
    ;;
    *)
    usage
    exit1 "Undefined logroot for \"$target\""
    ;;
esac
case "$target" in
    ftp|web|weberror|weberrors|websuexec|mail|system)
    logpattern="$(printf '.*/%s(\.[[:digit:]]+(\.gz)?)?\n' "$log")"
    ;;
    *)
    exit1 "Undefined logpattern for \"$target\""
    ;;
esac

if [ $# -gt 0 ]; then
    grep_opts=""
    for keyword in $@; do
        grep_opts="$opts -e $keyword"
    done
    cat_logs "$logroot" "$logpattern" 7 | grep -i $grep_opts | tail -n $tail_history
#   [ -f $logroot/$log ] && tail -n 0 -F $logroot/$log | grep -i $grep_opts
else
    cat_logs "$logroot" "$logpattern" 7 | tail -n $tail_history
#   [ -f $logroot/$log ] && tail -n 0 -F $logroot/$log
fi