added netGetIfaces()

[grml-shlib.git] / sh-lib

diff --git a/sh-lib b/sh-lib
index 2183b56..4d858a9 100644 (file)
--- a/sh-lib
+++ b/sh-lib
@@ -428,6 +428,28 @@ function netValidIp
   return $ret_
 }
 
+function netGetIfaces
+{
+       local error_function_=${1:-"eprint"}    # function to call on error
+       local message_="$2"    # user supplied error message
+       local if_=''
+       local ret_=''
+
+       #ip a|grep 'inet ' |awk '$NF !~ /lo/{print $NF}'
+       if_="`ip a|grep 'inet ' |awk '{print $NF}'`"
+       ret_=$?
+       if [ -z "$if_" ]; then
+               if [ -z "$message_" ]; then
+                       "$error_function_" "no interfaces found" $ret_
+               else
+                       "$error_function_" "$message_" $ret_
+               fi
+               return 1
+       fi
+       dprint "interfaces found" $ret_
+       echo "$if_"
+}
+
 # FIXME
 function netGetDefaultGateway
 {