showlog



#!/bin/bash
# /usr/local/sbin/showlog: Show topic-specific log entries
# Written by Jonas Smedegaard <dr@jones.dk>

# halt on errors (NB! this is a bashism...)
set -e

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

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

tail_history="50"

target=$1
logroot="/var/log"
case "$target" in
    ftp)
    log="xferlog"
    logs="$log.??.gz $log.?.gz $log.? $log"
    ;;
    web)
    logroot="/var/log/apache"
    log="access.log"
    logs="$log.??.gz $log.?.gz $log.? $log"
    ;;
    weberror)
    logroot="/var/log/apache"
    log="error.log"
    logs="$log.??.gz $log.?.gz $log.? $log"
    ;;
    mail)
    log="mail.log"
    logs="$log.??.gz $log.?.gz $log.? $log"
    ;;
    system)
    log="syslog"
    logs="$log.??.gz $log.?.gz $log.? $log"
    ;;
    *)
    usage
    ;;
esac
shift

function cat_logs() {
    logroot=$1
    shift
    for pattern in $@; do
        for file in `find $logroot -name "$pattern" -type f -mindepth 1 -maxdepth 1 -follow | sort`; do
            case $pattern in
                *.gz)
                zcat $file;;
                *.bz2)
                bzcat $file;;
                *)
                cat $file;;
            esac
        done
    done
}

if [ $# \> 0 ]; then
    grep_opts=""
    for keyword in $@; do
        grep_opts="$opts -e $keyword"
    done
    cat_logs $logroot $logs | 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 $logs | tail -n $tail_history
    [ -f $logroot/$log ] && tail -n 0 -f $logroot/$log
fi