mkeys: use $() instead of back quotes

(cherry picked from commit 0e45a2b02cf634119afaf30ba7a4dedad5701949)

diff --git a/bin/tests/system/mkeys/ns6/setup.sh b/bin/tests/system/mkeys/ns6/setup.sh
index 3abfe6221f2c61f8832d9e45c5026d9654ec51e7..1bfdc7f0d195c2daea01ffadf8041b4c93a1f5fd 100644 (file)
--- a/bin/tests/system/mkeys/ns6/setup.sh
+++ b/bin/tests/system/mkeys/ns6/setup.sh
@@ -25,7 +25,7 @@ unsupportedkey=Kunknown.+255+00000
 cp unsupported-managed.key "${unsupportedkey}.key"
 
 # root key
-rootkey=`cat ../ns1/managed.key`
+rootkey=$(cat ../ns1/managed.key)
 cp "../ns1/${rootkey}.key" .
 
 # Configure the resolving server with an initializing key.