misc: Use /usr/bin/env for a more generic shebang

Use path based SHELL in Makefiles. It was suggested that this is a
better solution for make for cases when there is no /usr/bin/env.

See: https://github.com/purpleidea/mgmt/pull/694#discussion_r1015596204

misc/bashrc.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 _cli_bash_autocomplete_mgmt() {
 	local cur prev opts base

misc/delta-cpu.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # shitty cpu count control, useful for live demos
 
 minimum=1	# don't decrease below this number of cpus

misc/fpm-pack.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # This script packages rpm, deb, and pacman packages of mgmt with fpm. The
 # first argument is the distro type, and the second argument is the version. All
 # subsequent arguments are the dependencies.

misc/header.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 if [ "$1" = "" ] || [ "$1" = "--help" ]; then
 	echo "usage: append standard header to file"

misc/looper.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # simple test loop runner, eg: ./looper.sh make test-shell-exec-fail
 
 while true

misc/make-baddev.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # Make a new "baddev" branch, start on whatever branch you want to base it on.
 git checkout -B baddev # scary -B reset the branch
 make

misc/make-deb-changelog.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # This script generates a deb changelog from the project's git history.
 
 # version we're releasing

misc/make-deps.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # setup a simple golang environment
 XPWD=`pwd`
 ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && cd .. && pwd )"	# dir!

misc/make-path.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # setup a few environment path values
 
 if ! env | grep -q '^GOPATH='; then

misc/make-rpm-changelog.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # This script generates an rpm changelog from the project's git history.
 
 # version we're releasing

misc/mgmt_debug.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # This is a helper script to run mgmt and capture and filter stack traces. Any
 # time mgmt crashes with a trace, it will first be filtered, and then displayed

misc/mkosi/Makefile

@@ -27,7 +27,7 @@
 # additional permission if he deems it necessary to achieve the goals of this
 # additional permission.
 
-SHELL = /usr/bin/env bash
+SHELL = bash
 .PHONY: all clean
 
 default: all

misc/mkosi/make.sh

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env -S bash -e
 
 echo running "$0"
 set -o errexit

misc/mkosi/mkosi.build

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # If mkosi.builddir/ exists mkosi will set $BUILDDIR to it, let's then use it as
 # out-of-tree build dir. Otherwise, let's make up our own builddir.

misc/tag.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -eEu
 set -o pipefail
 

misc/travis-encrypt.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # modified slightly, originally from:
 # https://raw.githubusercontent.com/dlenski/travis-encrypt-sh/master/travis-encrypt
 

misc/txtar-port.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # port tests to txtar
 for f in */main.mcl; do
 	echo $f == $(dirname $f)