diff --git a/xCAT-test/autotest/testcase/updatenode/cases0 b/xCAT-test/autotest/testcase/updatenode/cases0
index 59281087e..28b9db19c 100644
--- a/xCAT-test/autotest/testcase/updatenode/cases0
+++ b/xCAT-test/autotest/testcase/updatenode/cases0
@@ -665,7 +665,33 @@ cmd:rm -rf /install/custom/install/__GETNODEATTR($$CN,os)__/compute.$$OS.srcdstd
 check:rc==0
 end
 
-
-
-
-
+start:updatenode_postscripts_permission
+label:others,updatenode
+description:This is to test that postscripts in nested sub-directories can execute on CN by running "updatenode -P" on MN (xcat-core issue #6579).
+cmd:mkdir -p /install/postscripts/dir1/dir2/dir3
+check:rc==0
+cmd:echo -e '#!/bin/bash\n\nif [[ $1 == 1 ]] \nthen\n  echo \"The number is ONE\";\nelse\n  echo \"The number is NOT 1\"; \nfi\nexit 0;'> /install/postscripts/dir1/dir2/dir3/foo.bar
+check:rc==0
+cmd:chmod 755 /install/postscripts/dir1/dir2/dir3/foo.bar
+check:rc==0
+cmd:chdef -p -t node -o $$CN postscripts="dir1/dir2/dir3/foo.bar 1,dir1/dir2/dir3/foo.bar 0"
+check:rc==0
+cmd:updatenode $$CN -P "dir1/dir2/dir3/foo.bar 1"
+check:rc==0
+check:output=~ The number is ONE
+cmd:updatenode $$CN -P "dir1/dir2/dir3/foo.bar 0"
+check:rc==0
+check:output=~ The number is NOT 1
+cmd:xdsh $$CN "find /xcatpost/dir1/dir2/dir3/foo.bar -type f -perm -111 | egrep 'foo'"
+check:rc==0
+cmd:rm -f /install/postscripts/dir1/dir2/dir3/foo.bar
+check:rc==0
+cmd:cd /install/postscripts; rmdir -p dir1/dir2/dir3
+check:rc==0
+cmd:xdsh $$CN "rm -f /xcatpost/dir1/dir2/dir3/foo.bar"
+check:rc==0
+cmd:xdsh $$CN "cd /xcatpost; rmdir -p dir1/dir2/dir3"
+check:rc==0
+cmd:chdef -m -t node -o $$CN postscripts="dir1/dir2/dir3/foo.bar 1,dir1/dir2/dir3/foo.bar 0"
+check:rc==0
+end