bashreadline
diff --git a/tools/bashreadline.py b/tools/bashreadline.py
new file mode 100755
index 0000000..464dfda
--- /dev/null
+++ b/tools/bashreadline.py
@@ -0,0 +1,43 @@
+#!/usr/bin/python
+#
+# bashreadline Print entered bash commands from all running shells.
+# For Linux, uses BCC, eBPF. Embedded C.
+#
+# This works by tracing the readline() function using a uretprobe (uprobes).
+#
+# Copyright 2016 Netflix, Inc.
+# Licensed under the Apache License, Version 2.0 (the "License")
+#
+# 28-Jan-2016 Brendan Gregg Created this.
+
+from __future__ import print_function
+from bcc import BPF
+from time import strftime
+
+# load BPF program
+bpf_text = """
+#include <uapi/linux/ptrace.h>
+int printret(struct pt_regs *ctx) {
+ if (!ctx->ax)
+ return 0;
+
+ char str[80] = {};
+ bpf_probe_read(&str, sizeof(str), (void *)ctx->ax);
+ bpf_trace_printk("%s\\n", &str);
+
+ return 0;
+};
+"""
+b = BPF(text=bpf_text)
+b.attach_uretprobe(name="/bin/bash", sym="readline", fn_name="printret")
+
+# header
+print("%-9s %-6s %s" % ("TIME", "PID", "COMMAND"))
+
+# format output
+while 1:
+ try:
+ (task, pid, cpu, flags, ts, msg) = b.trace_fields()
+ except ValueError:
+ continue
+ print("%-9s %-6d %s" % (strftime("%H:%M:%S"), pid, msg))