diff --git a/common/changepath.py b/common/changepath.py
new file mode 100755
index 0000000..3ebd38c
--- /dev/null
+++ b/common/changepath.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+#
+# changepath.py:  Look up all .mag files in maglef paths from the root
+# PDK directory given as the first argument, and replace them with the
+# path that is given as the second argument.
+#
+# The purpose of this script is to prepare a technology for relocation.
+# This script may be expanded to take care of all relocation issues.
+# For now, only the property "GDS_FILE" in each .mag file is modified.
+#
+# Usage, e.g.:
+#
+# changepath.py /home/tim/projects/efabless/tech/XFAB/EFXH035B/libs.ref/mag/D_CELLS /ef/tech/XFAB/EFXH035B/libs.ref/mag/D_CELLS
+
+import os
+import re
+import sys
+import glob
+
+def usage():
+    print("changepath.py <orig_path_to_dir> <target_path_to_dir>")
+    return 0
+
+if __name__ == '__main__':
+
+    if len(sys.argv) == 1:
+        usage()
+        sys.exit(0)
+
+    optionlist = []
+    arguments = []
+
+    for option in sys.argv[1:]:
+        if option.find('-', 0) == 0:
+            optionlist.append(option)
+        else:
+            arguments.append(option)
+
+    if len(arguments) != 2:
+        print("Wrong number of arguments given to changepath.py.")
+        usage()
+        sys.exit(0)
+
+    source = arguments[0]
+    target = arguments[1]
+
+    gdssource = source.replace('/mag/', '/gds/')
+    gdssource = gdssource.replace('/maglef/', '/gds/')
+    gdstarget = target.replace('/mag/', '/gds/')
+    gdstarget = gdstarget.replace('/maglef/', '/gds/')
+
+    magpath = source + '/*.mag'
+    sourcefiles = glob.glob(magpath)
+
+    if len(sourcefiles) == 0:
+        print("Warning:  No files were found in the path " + magpath + ".")
+
+    for file in sourcefiles:
+        # print("Converting file " + file)
+        with open(file, 'r') as ifile:
+            magtext = ifile.read().splitlines() 
+
+        proprex = re.compile('string[ \t]+GDS_FILE[ \t]+([^ \t]+)')
+        with open(file, 'w') as ofile:
+            for line in magtext:
+                pmatch = proprex.match(line)
+                if pmatch:
+                    filepath = pmatch.group(1)
+                    if filepath.startswith(gdssource):
+                        print('string GDS_FILE ' + filepath.replace(gdssource, gdstarget), file=ofile)
+                    else:
+                        print(line, file=ofile)
+                else:
+                    print(line, file=ofile)
+