diff --git a/all.bash b/all.bash
new file mode 100755
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--- /dev/null
+++ b/all.bash
@@ -0,0 +1,103 @@
+#!/usr/bin/env bash
+# Copyright 2021 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+EXIT_CODE=0
+
+# runcud prints an info log describing the command that is about to be run, and
+# then runs it. It sets EXIT_CODE to non-zero if the command fails, but does not exit
+# the script.
+runcmd() {
+  # Truncate command logging for narrow terminals.
+  # Account for the 2 characters of '$ '.
+  maxwidth=$(( $(tput cols) - 2 ))
+  if [[ ${#msg} -gt $maxwidth ]]; then
+    msg="${msg::$(( maxwidth - 3 ))}..."
+  fi
+
+  echo -e "$@\n" 1>&2;
+  $@ || err "command failed"
+}
+
+# ensure_go_binary verifies that a binary exists in $PATH corresponding to the
+# given go-gettable URI. If no such binary exists, it is fetched via `go get`.
+ensure_go_binary() {
+  local binary=$(basename $1)
+  if ! [ -x "$(command -v $binary)" ]; then
+    info "Installing: $1"
+    # Run in a subshell for convenience, so that we don't have to worry about
+    # our PWD.
+    (set -x; cd && env GO111MODULE=on go get -u $1)
+  fi
+}
+
+# check_unparam runs unparam on source files.
+check_unparam() {
+  ensure_go_binary mvdan.cc/unparam
+  runcmd unparam ./...
+}
+
+# check_vet runs go vet on source files.
+check_vet() {
+  runcmd go vet -all ./...
+}
+
+# check_staticcheck runs staticcheck on source files.
+check_staticcheck() {
+  ensure_go_binary honnef.co/go/tools/cmd/staticcheck
+  runcmd staticcheck $(go list ./... | grep -v third_party | grep -v internal/doc | grep -v internal/render)
+}
+
+# check_misspell runs misspell on source files.
+check_misspell() {
+  ensure_go_binary github.com/client9/misspell/cmd/misspell
+  runcmd misspell cmd/**/*.{go,sh} internal/**/* README.md
+}
+
+go_linters() {
+  check_vet
+  check_staticcheck
+  check_misspell
+  check_unparam
+}
+
+go_test() {
+  runcmd go test ./...
+}
+
+usage() {
+  cat <<EOUSAGE
+Usage: $0 [subcommand]
+Available subcommands:
+  (empty)        - run all standard checks and tests:
+     * headers: check source files for the license disclaimer
+     * misspell: run misspell on source files
+     * staticcheck: run staticcheck on source files
+     * unparam: run unparam on source files
+     * vet: run go vet on source files
+  help           - display this help message
+EOUSAGE
+}
+
+main() {
+  case "$1" in
+    "-h" | "--help" | "help")
+      usage
+      exit 0
+      ;;
+    "")
+      go_linters
+      go_test
+      ;;
+    *)
+      usage
+      exit 1
+  esac
+  if [[ $EXIT_CODE != 0 ]]; then
+    err "FAILED; see errors above"
+  fi
+  exit $EXIT_CODE
+}
+
+main $@