Used a cross-platform Bash shebang.

contrib/release_if_new_version.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

interfacer/contrib/build_browsh.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # This is for building a production version of Browsh.
 # To build Browsh during development see:

interfacer/contrib/get_browsh_version.sh

@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 set -e
 
 PROJECT_ROOT=$(git rev-parse --show-toplevel)

interfacer/contrib/setup_dep.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 # Install `dep` the current defacto dependency for Golang

interfacer/contrib/setup_firefox.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -ex
 

interfacer/contrib/upx_compress_binary.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -ex
 shopt -s extglob
 

interfacer/contrib/xpi2bin.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 INTERFACER_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && cd ../ && pwd )"

webext/contrib/bundle_webextension.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Convert the Browsh webextension into embedable binary data so that we can
 # distribute Browsh as a single static binary.
 

webext/contrib/firefoxheadless.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [[ "$1" = "kill" ]]; then
   kill $(ps aux|grep headless|grep 'profile /tmp'| tr -s ' ' | cut -d ' ' -f2)

webext/contrib/setup_node.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if ! type "nvm" > /dev/null; then
   rm -rf ~/.nvm