tools/examples: hardcode #!/usr/bin/python shebang
diff --git a/examples/tracing/bitehist.py b/examples/tracing/bitehist.py
index 410424b..c8c7f7a 100755
--- a/examples/tracing/bitehist.py
+++ b/examples/tracing/bitehist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# bitehist.py Block I/O size histogram.
# For Linux, uses BCC, eBPF. Embedded C.
diff --git a/examples/tracing/disksnoop.py b/examples/tracing/disksnoop.py
index c30ac0a..ed3dd81 100755
--- a/examples/tracing/disksnoop.py
+++ b/examples/tracing/disksnoop.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# disksnoop.py Trace block device I/O: basic version of iosnoop.
# For Linux, uses BCC, eBPF. Embedded C.
diff --git a/examples/tracing/hello_fields.py b/examples/tracing/hello_fields.py
index bad1a22..be53e62 100755
--- a/examples/tracing/hello_fields.py
+++ b/examples/tracing/hello_fields.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# This is a Hello World example that formats output as fields.
diff --git a/examples/tracing/hello_perf_output.py b/examples/tracing/hello_perf_output.py
index eb1e997..7decd58 100755
--- a/examples/tracing/hello_perf_output.py
+++ b/examples/tracing/hello_perf_output.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# This is a Hello World example that uses BPF_PERF_OUTPUT.
diff --git a/examples/tracing/kvm_hypercall.py b/examples/tracing/kvm_hypercall.py
index 322bb8e..5f1d3d7 100755
--- a/examples/tracing/kvm_hypercall.py
+++ b/examples/tracing/kvm_hypercall.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# kvm_hypercall.py
#
diff --git a/examples/tracing/mallocstacks.py b/examples/tracing/mallocstacks.py
index 4820447..2f3eb25 100644
--- a/examples/tracing/mallocstacks.py
+++ b/examples/tracing/mallocstacks.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# mallocstacks Trace malloc() calls in a process and print the full
# stack trace for all callsites.
diff --git a/examples/tracing/mysqld_query.py b/examples/tracing/mysqld_query.py
index cf877d1..15ff297 100755
--- a/examples/tracing/mysqld_query.py
+++ b/examples/tracing/mysqld_query.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# mysqld_query Trace MySQL server queries. Example of USDT tracing.
# For Linux, uses BCC, BPF. Embedded C.
diff --git a/examples/tracing/nodejs_http_server.py b/examples/tracing/nodejs_http_server.py
index 367e9d7..1017de5 100755
--- a/examples/tracing/nodejs_http_server.py
+++ b/examples/tracing/nodejs_http_server.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# nodejs_http_server Basic example of node.js USDT tracing.
# For Linux, uses BCC, BPF. Embedded C.
diff --git a/examples/tracing/stacksnoop.py b/examples/tracing/stacksnoop.py
index d16b59d..bced93f 100755
--- a/examples/tracing/stacksnoop.py
+++ b/examples/tracing/stacksnoop.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# stacksnoop Trace a kernel function and print all kernel stack traces.
# For Linux, uses BCC, eBPF, and currently x86_64 only. Inline C.
diff --git a/examples/tracing/strlen_count.py b/examples/tracing/strlen_count.py
index 103464f..49d7080 100755
--- a/examples/tracing/strlen_count.py
+++ b/examples/tracing/strlen_count.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# strlen_count Trace strlen() and print a frequency count of strings.
# For Linux, uses BCC, eBPF. Embedded C.
diff --git a/examples/tracing/strlen_hist.py b/examples/tracing/strlen_hist.py
index 4652c4a..dda1cb2 100755
--- a/examples/tracing/strlen_hist.py
+++ b/examples/tracing/strlen_hist.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# strlen_hist.py Histogram of system-wide strlen return values
diff --git a/examples/tracing/strlen_snoop.py b/examples/tracing/strlen_snoop.py
index 44be1ac..c3c7199 100755
--- a/examples/tracing/strlen_snoop.py
+++ b/examples/tracing/strlen_snoop.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# strlen_snoop Trace strlen() library function for a given PID.
# For Linux, uses BCC, eBPF. Embedded C.
diff --git a/examples/tracing/sync_timing.py b/examples/tracing/sync_timing.py
index a00bf5a..675ad14 100755
--- a/examples/tracing/sync_timing.py
+++ b/examples/tracing/sync_timing.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# sync_timing.py Trace time between syncs.
# For Linux, uses BCC, eBPF. Embedded C.
diff --git a/examples/tracing/task_switch.py b/examples/tracing/task_switch.py
index 46d43ba..161edfb 100755
--- a/examples/tracing/task_switch.py
+++ b/examples/tracing/task_switch.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
# Copyright (c) PLUMgrid, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")
diff --git a/examples/tracing/tcpv4connect.py b/examples/tracing/tcpv4connect.py
index 5b03717..8a89469 100755
--- a/examples/tracing/tcpv4connect.py
+++ b/examples/tracing/tcpv4connect.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# tcpv4connect Trace TCP IPv4 connect()s.
# For Linux, uses BCC, eBPF. Embedded C.
diff --git a/examples/tracing/trace_fields.py b/examples/tracing/trace_fields.py
index 63a7b53..8b57f9a 100755
--- a/examples/tracing/trace_fields.py
+++ b/examples/tracing/trace_fields.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
# Copyright (c) PLUMgrid, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")
diff --git a/examples/tracing/trace_perf_output.py b/examples/tracing/trace_perf_output.py
index 865a459..26333c8 100755
--- a/examples/tracing/trace_perf_output.py
+++ b/examples/tracing/trace_perf_output.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
# Copyright (c) PLUMgrid, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")
diff --git a/examples/tracing/urandomread-explicit.py b/examples/tracing/urandomread-explicit.py
index 7be545a..448ffdf 100755
--- a/examples/tracing/urandomread-explicit.py
+++ b/examples/tracing/urandomread-explicit.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# urandomread-explicit Example of instrumenting a kernel tracepoint.
# For Linux, uses BCC, BPF. Embedded C.
diff --git a/examples/tracing/urandomread.py b/examples/tracing/urandomread.py
index 80ea9de..319db2c 100755
--- a/examples/tracing/urandomread.py
+++ b/examples/tracing/urandomread.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# urandomread Example of instrumenting a kernel tracepoint.
# For Linux, uses BCC, BPF. Embedded C.
diff --git a/examples/tracing/vfsreadlat.py b/examples/tracing/vfsreadlat.py
index f4daae5..b2c4156 100755
--- a/examples/tracing/vfsreadlat.py
+++ b/examples/tracing/vfsreadlat.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
#
# vfsreadlat.py VFS read latency distribution.
# For Linux, uses BCC, eBPF. See .c file.