To run the scripts, fire up `gdb` and load a script with `source -v`. Example:
-```bash
+```lang=bash
$ gdb -p 123456
(gdb) source -v ./folly/experimental/gdb/deadlock.py
Type "deadlock" to detect deadlocks.
Consider the following program that always deadlocks:
-```cpp
+```lang=cpp
void deadlock3() {
std::mutex m1, m2, m3;
folly::Baton<> b1, b2, b3;
The `deadlock.py` script introduces a new `deadlock` command that can help
us identify the threads and mutexes involved with the deadlock.
-```bash
+```lang=bash
$ gdb -p 2174496
(gdb) source -v ./folly/experimental/gdb/deadlock.py
Type "deadlock" to detect deadlocks.