Network-info.sh

#!/bin/bash
IP4FW=/sbin/iptables
IP6FW=/sbin/ip6tables
LSPCI=/usr/bin/lspci
ROUTE=/sbin/route
NETSTAT=/bin/netstat
LSB=/usr/bin/lsb_release
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="network.$(date +'%d-%m-%y').info.txt"
SUPPORT_ID="your_name@service_provider.com"
chk_root() {
	local meid="$(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"
	[ -x "$HWINF" ] && "$HWINF" >>"$OUTPUT"
	[ -x "$HWINF" ] && write_header "$HWINF"
	[ -x "$HWINF" ] && "$HWINF" >>"$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