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path: root/bin/NS2SetMac.sh
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-rwxr-xr-xbin/NS2SetMac.sh16
1 files changed, 14 insertions, 2 deletions
diff --git a/bin/NS2SetMac.sh b/bin/NS2SetMac.sh
index 51810ae..e6111c7 100755
--- a/bin/NS2SetMac.sh
+++ b/bin/NS2SetMac.sh
@@ -1,4 +1,8 @@
-# store/set MAC address for given interface
+# this script is part of networksettings2 package
+# purpose : set fixed MAC address for network devices that
+# have random addresses (like usb)
+#
+
NS2MacStore=/etc/NS2
[ ! -d ${NS2MacStore} ] && mkdir ${NS2MacStore}
@@ -11,12 +15,20 @@ fi
if [ -f ${NS2MacStore}/$1.mac ]
then
# set this mac
- /sbin/ifconfig $1 hw ether `cat ${NS2MacStore}/$1.mac`
+ X=`cat ${NS2MacStore}/$1.mac`
+ if [ ! -z "$X" ]
+ then
+ /sbin/ifconfig $1 hw ether $X
+ fi
else
# remember current mac for all times
X=`/sbin/ifconfig $1 | grep HWaddr`
X=${X#*HWaddr } # strip till HWaddr
X=${X%% *} # remove trailing spaces
+ if [ ! -z "$X" ]
+ then
+ # valid mac address
echo ${X} > ${NS2MacStore}/$1.mac
fi
+fi
exit 0