root-tools/syncifstate

   1 #!/bin/bash
   2
   3 f="/etc/network/run/ifstate"
   4
   5 export IFS="$IFS="
   6 cat "$f" | \
   7 {
   8 declare -A ifaces
   9
  10 while read alias phy
  11 do
  12         ifaces[$alias]=1
  13         if [ -z "$1" -o "$alias" = "$1" ]
  14         then
  15                 if ! ip link show "$phy" | grep -q -w UP
  16                 then
  17                         sed -i "$f" -e "/^$alias=$phy\$/d"
  18                 fi
  19         fi
  20 done
  21 ip -o link show | \
  22 while read n iface rest
  23 do
  24         iface=${iface%:*}
  25         if [ -z "${ifaces[$iface]}" ]
  26         then
  27                 if grep -q -w UP <<<"$rest"
  28                 then
  29                         echo "$iface=$iface" >>"$f"
  30                 fi
  31         fi
  32 done
  33 }