dumpnetworkinfo

    #!/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 http://bash.cyberciti.biz/ 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