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#!/bin/bash
# A Linux Shell script to collect information on your network configuration.
# -------------------------------------------------------------------------
# Copyright (c) 2003 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit <a href="http://bash.cyberciti.biz/" >http://bash.cyberciti.biz/</a> for more information.
# -------------------------------------------------------------------------
# Last updated: Jun-03-2009
# -------------------------------------------------------------------------
HWINF=/usr/sbin/hwinfo
IFCFG=/sbin/ifconfig
IP4FW=/sbin/iptables
IP6FW=/sbin/ip6tables
LSPCI=/sbin/lspci
ROUTE=/sbin/route
NETSTAT=/bin/netstat
LSB=/usr/bin/lsb_release

## files ##
DNSCLIENT="/etc/resolv.conf"
DRVCONF="/etc/modprobe.conf"
NETALIASCFC="/etc/sysconfig/network-scripts/ifcfg-eth?-range?"
NETCFC="/etc/sysconfig/network-scripts/ifcfg-eth?"
NETSTATICROUTECFC="/etc/sysconfig/network-scripts/route-eth?"
SYSCTL="/etc/sysctl.conf"

## Output file ##
OUTPUT="network.$(date +'%d-%m-%y').info.txt"

## Email info to?? ##
SUPPORT_ID="you@example.com"

chk_root(){
local meid=$(id -u)
if [ $meid -ne 0 ];
then
echo "You must be root user to run this tool"
exit 999
fi
}

write_header(){
echo "---------------------------------------------------" >> $OUTPUT
echo "$@" >> $OUTPUT
echo "---------------------------------------------------"  >> $OUTPUT
}

dump_info(){
echo "* Hostname: $(hostname)" >$OUTPUT
echo "* Run date and time: $(date)" >>$OUTPUT

write_header "Linux Distro"
echo "Linux kernel: $(uname -mrs)" >>$OUTPUT
$LSB -a >> $OUTPUT

[ -x ${HWINF} ] && write_header "${HWINF} --network_ctrl"
[ -x ${HWINF} ] && ${HWINF} --network_ctrl >> $OUTPUT

[ -x ${HWINF} ] && write_header "${HWINF} --isapnp"
[ -x ${HWINF} ] && ${HWINF} --isapnp >> $OUTPUT

write_header "PCI Devices"
${LSPCI} -v >> $OUTPUT

write_header "$IFCFG Output"
$IFCFG >> $OUTPUT

write_header "Kernel Routing Table"
$ROUTE -n >> $OUTPUT

write_header "Network Card Drivers Configuration $DRVCONF"
[ -f $DRVCONF ] && grep eth $DRVCONF  >> $OUTPUT || echo "Error $DRVCONF file not found."  >> $OUTPUT

write_header "DNS Client $DNSCLIENT Configuration"
[ -f $DNSCLIENT ] && cat $DNSCLIENT >> $OUTPUT || echo "Error $DNSCLIENT file not found." >> $OUTPUT

write_header "Network Configuration File"
for f in $NETCFC
do
if [ -f $f ]
then
echo "** $f **" >> $OUTPUT
cat $f >> $OUTPUT
else
echo "Error $f not found." >> $OUTPUT
fi
done

write_header "Network Aliase File"
for f in $NETALIASCFC
do
if [ -f $f ]
then
echo "** $f **" >> $OUTPUT
cat $f >> $OUTPUT
else
echo "Error $f not found." >> $OUTPUT
fi
done

write_header "Network Static Routing Configuration"
for f in $NETSTATICROUTECFC
do
if [ -f $f ]
then
echo "** $f **" >> $OUTPUT
cat $f >> $OUTPUT
else
echo "Error $f not found." >> $OUTPUT
fi
done

write_header "IP4 Firewall Configuration"
$IP4FW -L -n >> $OUTPUT

write_header "IP6 Firewall Configuration"
$IP6FW -L -n  >> $OUTPUT

write_header "Network Stats"
$NETSTAT -s >> $OUTPUT

write_header "Network Tweaks via $SYSCTL"
[ -f $SYSCTL ] && cat $SYSCTL >> $OUTPUT || echo "Error $SYSCTL not found." >>$OUTPUT

echo "The Network Configuration Info Written To $OUTPUT. Please email this file to $SUPPORT_ID."
}

chk_root
dump_info

source