brendangregg/perf-tools — pull request #6 by ruediger (2014-08-21 12:52:32+00:00)
Title: Use /usr/bin/env in shebang.

On some distributions (e.g., NixOS) the bash binary is not in /bin/bash
and the perl binary not in /usr/bin/perl. Using /usr/bin/env in the
shebag instead should make it work.