--- a/memory/replace/dmd/dmd.py
+++ b/memory/replace/dmd/dmd.py
@@ -607,18 +607,22 @@ def printDigest(args, digest):
 
 
     def printInvocation(n, dmdEnvVar, sampleBelowSize):
         out('Invocation{:} {{'.format(n))
         out('  $DMD = \'' + dmdEnvVar + '\'')
         out('  Sample-below size = ' + str(sampleBelowSize))
         out('}\n')
 
+    # Print command line. Strip dirs so the output is deterministic, which is
+    # needed for testing.
+    out(separator, end='')
+    out('# ' + ' '.join(map(os.path.basename, sys.argv)) + '\n')
+
     # Print invocation(s).
-    out(separator)
     if type(dmdEnvVar) is not tuple:
         printInvocation('', dmdEnvVar, sampleBelowSize)
     else:
         printInvocation(' 1', dmdEnvVar[0], sampleBelowSize[0])
         printInvocation(' 2', dmdEnvVar[1], sampleBelowSize[1])
 
     # Print records.
     if args.ignore_reports:

--- a/memory/replace/dmd/test/full-heap-empty-expected.txt
+++ b/memory/replace/dmd/test/full-heap-empty-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-heap-empty-actual.txt --ignore-reports full-empty.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-heap-sampled-expected.txt
+++ b/memory/replace/dmd/test/full-heap-sampled-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-heap-sampled-actual.txt --ignore-reports full-sampled.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 128
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-heap-unsampled1-expected.txt
+++ b/memory/replace/dmd/test/full-heap-unsampled1-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-heap-unsampled1-actual.txt --ignore-reports full-unsampled1.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-heap-unsampled2-expected.txt
+++ b/memory/replace/dmd/test/full-heap-unsampled2-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-heap-unsampled2-actual.txt --ignore-reports full-unsampled2.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-reports-empty-expected.txt
+++ b/memory/replace/dmd/test/full-reports-empty-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-reports-empty-actual.txt full-empty.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-reports-sampled-expected.txt
+++ b/memory/replace/dmd/test/full-reports-sampled-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-reports-sampled-actual.txt full-sampled.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 128
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-reports-unsampled1-expected.txt
+++ b/memory/replace/dmd/test/full-reports-unsampled1-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-reports-unsampled1-actual.txt full-unsampled1.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/full-reports-unsampled2-expected.txt
+++ b/memory/replace/dmd/test/full-reports-unsampled2-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o full-reports-unsampled2-actual.txt full-unsampled2.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-diff-basic-expected.txt
+++ b/memory/replace/dmd/test/script-diff-basic-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-diff-basic-actual.txt script-diff1.json script-diff2.json
 
 Invocation 1 {
   $DMD = '--sample-below=127'
   Sample-below size = 127
 }
 
 Invocation 2 {
   $DMD = '--sample-below=63'

--- a/memory/replace/dmd/test/script-diff-options-expected.txt
+++ b/memory/replace/dmd/test/script-diff-options-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-diff-options-actual.txt --ignore-reports script-diff1.json script-diff2.json
 
 Invocation 1 {
   $DMD = '--sample-below=127'
   Sample-below size = 127
 }
 
 Invocation 2 {
   $DMD = '--sample-below=63'

--- a/memory/replace/dmd/test/script-ignore-alloc-fns-expected.txt
+++ b/memory/replace/dmd/test/script-ignore-alloc-fns-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-ignore-alloc-fns-actual.txt --ignore-reports --ignore-alloc-fns script-ignore-alloc-fns.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 2500
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-max-frames-1-expected.txt
+++ b/memory/replace/dmd/test/script-max-frames-1-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-max-frames-1-actual.txt --ignore-reports --max-frames=1 script-max-frames.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-max-frames-3-expected.txt
+++ b/memory/replace/dmd/test/script-max-frames-3-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-max-frames-3-actual.txt --ignore-reports --max-frames=3 --no-fix-stacks script-max-frames.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-max-frames-8-expected.txt
+++ b/memory/replace/dmd/test/script-max-frames-8-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-max-frames-8-actual.txt --ignore-reports --max-frames=8 script-max-frames.json
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-sort-by-req-expected.txt
+++ b/memory/replace/dmd/test/script-sort-by-req-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-sort-by-req-actual.txt --ignore-reports --sort-by=req --no-fix-stacks script-sort-by.json.gz
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-sort-by-slop-expected.txt
+++ b/memory/replace/dmd/test/script-sort-by-slop-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-sort-by-slop-actual.txt --ignore-reports --sort-by=slop script-sort-by.json.gz
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------
 

--- a/memory/replace/dmd/test/script-sort-by-usable-expected.txt
+++ b/memory/replace/dmd/test/script-sort-by-usable-expected.txt
@@ -1,9 +1,10 @@
 #-----------------------------------------------------------------
+# dmd.py --filter-stacks-for-testing -o script-sort-by-usable-actual.txt --ignore-reports --sort-by=usable script-sort-by.json.gz
 
 Invocation {
   $DMD = '1'
   Sample-below size = 1
 }
 
 #-----------------------------------------------------------------