added a bash script to rename old fsu file

Aux/rename_oldFSU.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+if [ $# -eq 0 ]; then
+    echo "Usage: $0 file_pattern"
+    echo "example:"
+    echo "    $0  \"test_002*.fsu\""
+    exit 1
+fi
+
+file_pattern="$1"
+
+# Iterate through each file in the directory
+for file in ${file_pattern}; do
+
+  echo ${file}
+
+  if [[ $file == *QDC* ]]; then
+    # Insert "16" before the last underscore
+    new_name="${file%_*}_16_${file##*_}"
+  else
+    # Insert "4" before the last underscore
+    new_name="${file%_*}_4_${file##*_}"
+  fi
+  
+  # Rename the file
+  mv -iv "$file" "$new_name"
+  
+  echo "Renamed: $file to $new_name"
+
+done