print all the relevant info about all the nics; useful for machines w/ multiple network cards; linux only

nic

#!/bin/sh

errno=0
sys=/sys/class/net

# $1 == nic
dump() {
    [ -d "$sys/$1" ] || { echo "$1 is absent" 1>&2; errno=2; return; }

    echo Name "$1" | pp
    echo MAC "`cat "$sys/$1/address"`" | pp
    echo Driver "`uevent "$1" DRIVER`" | pp
    echo pci_id "`uevent "$1" PCI_ID`" | pp
    echo usb_id "`usb_id "$1"`" | pp
    (pci "$1" || usb "$1") | pp
}

# $1 == nic
pci() {
    local dev=`uevent "$1" PCI_ID`
    [ ! -z "$dev" ] && /usr/sbin/lspci -d  "$dev" -vmmk 2>/dev/null \
	    | gawk 'match($0, /^(S?Vendor|S?Device|Rev):(.*)/, r) { printf("%s %s\n", r[1], r[2]) }'
}

# $1 == nic
usb() {
    local dev=`usb_id "$1"`
    [ ! -z "$dev" ] && lsusb -v -d "$dev" 2>/dev/null | awk '/idVendor|id?Product|iManufacturer|iSerial/ {printf $1; $1=""; $2=""; print $0}'
}

# $1 == nic
usb_id() { uevent "$1" PRODUCT | awk -F/ '{printf("%s:%s", $1, $2)}'; }

# $1 == nic, $2 == key
uevent() { awk -F= '/^'"$2"'/ {print $2}' "$sys/$1/device/uevent" 2>/dev/null; }

pp() { awk '{if ($2 != "") { printf("%-15s", $1); $1=""; print $0} }'; }

nics=$*
[ -z "$nics" ] && { nics=`(cd $sys && echo *)` || exit 1; }

idx=0; for val in $nics; do
    [ $idx -ne 0 ] && echo ''
    dump "$val"
    idx=1
done

exit $errno