Theo de Raadt writes:
> > > + for _hn in /etc/hostname.??:??:??:??:??:??; do
> > > + _mac=`echo $_hn | cut -c 15-31`
_mac=${_hn#/etc/hostname.}
> > > + _if=`ifconfig | grep -B 1 $_mac | head -n 1 | awk -F ": "
> > > '{print $1}'`
mac2dev() {
# This got long
ifconfig | while IFS= read _line; do
if [[ "$_line" = [a-z]!(\ *):* ]]; then
_dev=${_line%%:*}
elif [[ "$_line" = *lladdr*$1* && $_dev != vlan* ]]; then
echo $_dev
fi
done
}
_if=$(mac2dev "$_mac") # or just _if=$(mac2dev ${_hn#*.})
IFS needs to be cleared for read otherwise initial whitespace is
stripped from _line.
Note that the vlan devices need to be excluded. Are there other
circumstances which could confuse this in ifconfig's output?
It could probably return immediately after printing.
Matthew
