modify hostname.sh to add 127.0.0.0 entry to /etc/hosts if not already present

recipes-core/initscripts/files/hostname.sh

@@ -70,3 +70,15 @@ else
     # unit serial number set, use it
     hostname $(get_sn 37).$url
 fi
+
+#Add 127.0.0.0 entry to /etc/hosts if it is not already present
+grep "127.0.0.0" /etc/hosts > tmp/junk
+if [ -s /tmp/junk ]; then
+	rm /tmp/junk
+else
+        NAME=$(hostname)                                                        
+        SHORTNAME=$(hostname | cut -b -16)                                      
+        NEWLINE="127.0.0.0	$NAME	$SHORTNAME"                             
+        sed -e"/^127.0.0.1/a ${NEWLINE}" /etc/hosts > /tmp/hosts2   
+        mv /tmp/hosts2 /etc/hosts                                   
+fi          

[David Mondou]

replacing this with sed -i "/^127.0.0.1/a ${NEWLINE}" /etc/hosts

will edit the file inline, so you won't need to create hosts2 and then move it.