diff --git a/xCAT-server/share/xcat/install/scripts/post.ubuntu b/xCAT-server/share/xcat/install/scripts/post.ubuntu
index 935ea4be3..01b35b9e4 100755
--- a/xCAT-server/share/xcat/install/scripts/post.ubuntu
+++ b/xCAT-server/share/xcat/install/scripts/post.ubuntu
@@ -159,8 +159,12 @@ run_ps () {
   echo \"\`date\` Running postscript: \$*\" 
   msgutil_r \"\$MASTER_IP\" \"info\" "\"\`date\` Running postscript: \$*\"" \"\$logfile\"
   if [ \"\$XCATDEBUGMODE\" = \"1\" ]; then
-     bash -x ./\$@ 2>&1 | tee -a \$logfile
-     ret_local=\${PIPESTATUS[0]}
+     local compt=\$(file \$1)
+     local reg=\"shell script\"
+     if [[ \"\$compt\" =~ \$reg ]]; then
+        bash -x ./\$@ 2>&1 | tee -a \$logfile
+        ret_local=\${PIPESTATUS[0]}
+     fi
   else
      ./\$@ 2>&1 | tee -a \$logfile
      ret_local=\${PIPESTATUS[0]}
diff --git a/xCAT-server/share/xcat/install/scripts/post.xcat b/xCAT-server/share/xcat/install/scripts/post.xcat
index 85632056e..7c1719200 100755
--- a/xCAT-server/share/xcat/install/scripts/post.xcat
+++ b/xCAT-server/share/xcat/install/scripts/post.xcat
@@ -144,8 +144,12 @@ run_ps () {
   echo \"\`date\` Running postscript: \$*\" 
   msgutil_r \"\$MASTER_IP\" \"info\" "\"\`date\` Running postscript: \$*\"" \"\$logfile\"
   if [ \"\$XCATDEBUGMODE\" = \"1\" ]; then
-     bash -x ./\$@ 2>&1 | tee -a \$logfile
-     ret_local=\${PIPESTATUS[0]}
+     local compt=\$(file \$1)
+     local reg=\"shell script\"
+     if [[ \"\$compt\" =~ \$reg ]]; then
+        bash -x ./\$@ 2>&1 | tee -a \$logfile
+        ret_local=\${PIPESTATUS[0]}
+     fi
   else
      ./\$@ 2>&1 | tee -a \$logfile
      ret_local=\${PIPESTATUS[0]}
diff --git a/xCAT/postscripts/xcatdsklspost b/xCAT/postscripts/xcatdsklspost
index 646ef18e3..cf86c2e03 100755
--- a/xCAT/postscripts/xcatdsklspost
+++ b/xCAT/postscripts/xcatdsklspost
@@ -829,8 +829,12 @@ run_ps () {
   echo \"\`date\` Running postscript: \$*\" 
   msgutil_r \"\$MASTER_IP\" \"info\" "\"\`date\` Running postscript: \$*\"" \"\$logfile\"
   if [ \"\$XCATDEBUGMODE\" = \"1\" ]; then
-     bash -x ./\$@ 2>&1 | tee -a \$logfile
-     ret_local=\${PIPESTATUS[0]}
+     local compt=\$(file \$1)
+     local reg=\"shell script\"
+     if [[ \"\$compt\" =~ \$reg ]]; then
+        bash -x ./\$@ 2>&1 | tee -a \$logfile
+        ret_local=\${PIPESTATUS[0]}
+     fi
   else
      ./\$@ 2>&1 | tee -a \$logfile
      ret_local=\${PIPESTATUS[0]}