diff --git a/2dxutils b/2dxutils
index b2a5837..54c209c 100755
--- a/2dxutils
+++ b/2dxutils
@@ -1,4 +1,9 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.twodxutils "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module("bemani.utils.twodxutils", run_name="__main__")
diff --git a/api b/api
index a0787e9..a0917b9 100755
--- a/api
+++ b/api
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.api "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/arcutils b/arcutils
index 2261364..a0917b9 100755
--- a/arcutils
+++ b/arcutils
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.arcutils "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/bemani/utils/read.py b/bemani/utils/read.py
index 6b0a4b1..1688463 100644
--- a/bemani/utils/read.py
+++ b/bemani/utils/read.py
@@ -1,6 +1,5 @@
-#! /usr/bin/env python3
-
 # vim: set fileencoding=utf-8
+
 import csv  # type: ignore
 import argparse
 import copy
diff --git a/bemanishark b/bemanishark
index 6050ad1..a0917b9 100755
--- a/bemanishark
+++ b/bemanishark
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.bemanishark "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/binutils b/binutils
index 1cf0bab..a0917b9 100755
--- a/binutils
+++ b/binutils
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.binutils "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/cardconvert b/cardconvert
index 7d23969..a0917b9 100755
--- a/cardconvert
+++ b/cardconvert
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.cardconvert "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/dbutils b/dbutils
index 84b3e3f..a0917b9 100755
--- a/dbutils
+++ b/dbutils
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.dbutils "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/frontend b/frontend
index 0a91423..a0917b9 100755
--- a/frontend
+++ b/frontend
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.frontend "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/ifsutils b/ifsutils
index f47eb41..a0917b9 100755
--- a/ifsutils
+++ b/ifsutils
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.ifsutils "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/iidxutils b/iidxutils
index a5351ad..a0917b9 100755
--- a/iidxutils
+++ b/iidxutils
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.iidxutils "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/proxy b/proxy
index 3dba2c3..a0917b9 100755
--- a/proxy
+++ b/proxy
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.proxy "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/psmap b/psmap
index ccafd9e..a0917b9 100755
--- a/psmap
+++ b/psmap
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.psmap "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/read b/read
index c5b5a4c..a0917b9 100755
--- a/read
+++ b/read
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.read "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/replay b/replay
index ad252f5..a0917b9 100755
--- a/replay
+++ b/replay
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.replay "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/responsegen b/responsegen
index dd96d2a..a0917b9 100755
--- a/responsegen
+++ b/responsegen
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.responsegen "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/scheduler b/scheduler
index b4401d7..a0917b9 100755
--- a/scheduler
+++ b/scheduler
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.scheduler "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/services b/services
index eae92cd..a0917b9 100755
--- a/services
+++ b/services
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.services "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/shell b/shell
index 9c7d11d..3554a1e 100755
--- a/shell
+++ b/shell
@@ -1,4 +1,9 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3
+import sys
+sys.path.append(path)
+
+import code
+code.InteractiveConsole().interact()
diff --git a/struct b/struct
index fdb7574..a0917b9 100755
--- a/struct
+++ b/struct
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.struct "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/trafficgen b/trafficgen
index b99c4f6..a0917b9 100755
--- a/trafficgen
+++ b/trafficgen
@@ -1,4 +1,10 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
+name = os.path.basename(__file__)
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m bemani.utils.trafficgen "$@"
+import sys
+sys.path.append(path)
+
+import runpy
+runpy.run_module(f"bemani.utils.{name}", run_name="__main__")
diff --git a/verifylibs b/verifylibs
index 83e943e..28164a0 100755
--- a/verifylibs
+++ b/verifylibs
@@ -1,4 +1,16 @@
-#! /bin/bash
+#! /usr/bin/env python3
+import os
+path = os.path.abspath(os.path.dirname(__file__))
 
-export PYTHONPATH=$(python -c "import os; print(os.path.realpath('.'))")
-python3 -m unittest discover -s bemani/tests "$@"
+import sys
+sys.path.append(path)
+sys.argv = [
+    sys.argv[0],
+    "discover",
+    "-s",
+    os.path.join(path, "bemani/tests"),
+    *sys.argv[1:],
+]
+
+import runpy
+runpy.run_module("unittest", run_name="__main__")