diff --git a/Cantera/python/examples/reactors/combustor_sim/.cvsignore b/Cantera/python/examples/reactors/combustor_sim/.cvsignore
index e8a4ee1bc..6935be083 100644
--- a/Cantera/python/examples/reactors/combustor_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/combustor_sim/.cvsignore
@@ -7,5 +7,4 @@ diff_out_0.txt
 gri30.xml
 output_0.txt
 ptcombust.xml
-runtest
 transport_log.xml
diff --git a/Cantera/python/examples/reactors/combustor_sim/runtest.in b/Cantera/python/examples/reactors/combustor_sim/runtest
similarity index 98%
rename from Cantera/python/examples/reactors/combustor_sim/runtest.in
rename to Cantera/python/examples/reactors/combustor_sim/runtest
index 914344a1d..fa3713ef6 100755
--- a/Cantera/python/examples/reactors/combustor_sim/runtest.in
+++ b/Cantera/python/examples/reactors/combustor_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt  combustor.csv  diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=combustor.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/functors_sim/.cvsignore b/Cantera/python/examples/reactors/functors_sim/.cvsignore
index ee46f1d22..2c08798b9 100644
--- a/Cantera/python/examples/reactors/functors_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/functors_sim/.cvsignore
@@ -1,5 +1,4 @@
 Makefile
-runtest
 ct2ctml.log
 diff_out_0.txt
 output_0.txt
diff --git a/Cantera/python/examples/reactors/functors_sim/runtest.in b/Cantera/python/examples/reactors/functors_sim/runtest
similarity index 97%
rename from Cantera/python/examples/reactors/functors_sim/runtest.in
rename to Cantera/python/examples/reactors/functors_sim/runtest
index c863c97a1..b3082c09f 100755
--- a/Cantera/python/examples/reactors/functors_sim/runtest.in
+++ b/Cantera/python/examples/reactors/functors_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt    diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=functors.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/mix1_sim/runtest.in b/Cantera/python/examples/reactors/mix1_sim/runtest
similarity index 97%
rename from Cantera/python/examples/reactors/mix1_sim/runtest.in
rename to Cantera/python/examples/reactors/mix1_sim/runtest
index e4392d987..f1cdbe0fb 100755
--- a/Cantera/python/examples/reactors/mix1_sim/runtest.in
+++ b/Cantera/python/examples/reactors/mix1_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt   diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=mix1.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/mix2_sim/.cvsignore b/Cantera/python/examples/reactors/mix2_sim/.cvsignore
index 15a043bb5..e247d5e47 100644
--- a/Cantera/python/examples/reactors/mix2_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/mix2_sim/.cvsignore
@@ -1,5 +1,4 @@
 Makefile
-runtest
 air.xml
 ct2ctml.log
 diff_out_0.txt
diff --git a/Cantera/python/examples/reactors/mix2_sim/runtest.in b/Cantera/python/examples/reactors/mix2_sim/runtest
similarity index 97%
rename from Cantera/python/examples/reactors/mix2_sim/runtest.in
rename to Cantera/python/examples/reactors/mix2_sim/runtest
index 3f65401c9..ad929ca66 100755
--- a/Cantera/python/examples/reactors/mix2_sim/runtest.in
+++ b/Cantera/python/examples/reactors/mix2_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt   diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=mix2.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/piston_sim/.cvsignore b/Cantera/python/examples/reactors/piston_sim/.cvsignore
index 469befc39..9251cb53e 100644
--- a/Cantera/python/examples/reactors/piston_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/piston_sim/.cvsignore
@@ -5,5 +5,4 @@ diff_out_0.txt
 gri30.xml
 h2o2.xml
 output_0.txt
-runtest
 transport_log.xml
diff --git a/Cantera/python/examples/reactors/piston_sim/runtest.in b/Cantera/python/examples/reactors/piston_sim/runtest
similarity index 97%
rename from Cantera/python/examples/reactors/piston_sim/runtest.in
rename to Cantera/python/examples/reactors/piston_sim/runtest
index 75371f924..2cf9da0c2 100755
--- a/Cantera/python/examples/reactors/piston_sim/runtest.in
+++ b/Cantera/python/examples/reactors/piston_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt   diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=piston.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/reactor1_sim/.cvsignore b/Cantera/python/examples/reactors/reactor1_sim/.cvsignore
index 5ca6ef77f..19689e731 100644
--- a/Cantera/python/examples/reactors/reactor1_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/reactor1_sim/.cvsignore
@@ -1,5 +1,4 @@
 Makefile
-runtest
 air.xml
 ct2ctml.log
 diff_out_0.txt
diff --git a/Cantera/python/examples/reactors/reactor1_sim/runtest.in b/Cantera/python/examples/reactors/reactor1_sim/runtest
similarity index 97%
rename from Cantera/python/examples/reactors/reactor1_sim/runtest.in
rename to Cantera/python/examples/reactors/reactor1_sim/runtest
index 4387166e4..b39e9d334 100755
--- a/Cantera/python/examples/reactors/reactor1_sim/runtest.in
+++ b/Cantera/python/examples/reactors/reactor1_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt   diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=reactor1.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/reactor2_sim/.cvsignore b/Cantera/python/examples/reactors/reactor2_sim/.cvsignore
index 51db673f5..421b674aa 100644
--- a/Cantera/python/examples/reactors/reactor2_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/reactor2_sim/.cvsignore
@@ -7,6 +7,5 @@ diff_out_0.txt
 gri30.xml
 output_0.txt
 piston.csv
-runtest
 transport_log.xml
 
diff --git a/Cantera/python/examples/reactors/reactor2_sim/runtest.in b/Cantera/python/examples/reactors/reactor2_sim/runtest
similarity index 98%
rename from Cantera/python/examples/reactors/reactor2_sim/runtest.in
rename to Cantera/python/examples/reactors/reactor2_sim/runtest
index bcdf2df2f..60081f6ce 100755
--- a/Cantera/python/examples/reactors/reactor2_sim/runtest.in
+++ b/Cantera/python/examples/reactors/reactor2_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt  piston.csv  diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=reactor2.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/sensitivity_sim/.cvsignore b/Cantera/python/examples/reactors/sensitivity_sim/.cvsignore
index 58f0c2dbc..2ecba3c37 100644
--- a/Cantera/python/examples/reactors/sensitivity_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/sensitivity_sim/.cvsignore
@@ -1,5 +1,4 @@
 Makefile
-runtest
 air.xml
 ct2ctml.log
 diff_out_0.txt
diff --git a/Cantera/python/examples/reactors/sensitivity_sim/runtest.in b/Cantera/python/examples/reactors/sensitivity_sim/runtest
similarity index 97%
rename from Cantera/python/examples/reactors/sensitivity_sim/runtest.in
rename to Cantera/python/examples/reactors/sensitivity_sim/runtest
index 93f053e9e..d7d614ef2 100755
--- a/Cantera/python/examples/reactors/sensitivity_sim/runtest.in
+++ b/Cantera/python/examples/reactors/sensitivity_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt   diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=sensitivity1.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'
diff --git a/Cantera/python/examples/reactors/surf_pfr_sim/.cvsignore b/Cantera/python/examples/reactors/surf_pfr_sim/.cvsignore
index f0ef0e608..d0c2217b7 100644
--- a/Cantera/python/examples/reactors/surf_pfr_sim/.cvsignore
+++ b/Cantera/python/examples/reactors/surf_pfr_sim/.cvsignore
@@ -1,5 +1,4 @@
 Makefile
-runtest
 buildlog
 carbon_pathways.dot
 ct2ctml.log
diff --git a/Cantera/python/examples/reactors/surf_pfr_sim/runtest.in b/Cantera/python/examples/reactors/surf_pfr_sim/runtest
similarity index 98%
rename from Cantera/python/examples/reactors/surf_pfr_sim/runtest.in
rename to Cantera/python/examples/reactors/surf_pfr_sim/runtest
index 0caf15677..a7ed28918 100755
--- a/Cantera/python/examples/reactors/surf_pfr_sim/runtest.in
+++ b/Cantera/python/examples/reactors/surf_pfr_sim/runtest
@@ -5,7 +5,6 @@ temp_success="1"
 /bin/rm  -f output_0.txt  surf_pfr_output.csv  diff_csv.txt diff_out_0.txt
 
 ##########################################################################
-PYTHON_CMD=@PYTHON_CMD@
 prog=surf_pfr.py
 if test ! -f $prog ; then
    echo $prog ' does not exist'