initial commit

which

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Copyright (c) 2023 Emma Tebibyte 
+# SPDX-License-Identifier: FSFAP
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice and this
+# notice are preserved.  This file is offered as-is, without any warranty.
+
+argv0="$0"
+
+if test -z "$1"; then
+	printf "Usage: %s command...\n" "$0" 1>&2
+fi
+
+while test -n "$1"; do
+	out="$(command -V "$1")"
+	location="$(printf "%s\n" "$out" | sed -n 's/.\+ .\+ //p')"
+
+	if [ "$location" = "found" ]; then
+		printf "%s: %s.\n" "$argv0" "$out" 1>&2
+		exit 69 # sysexits(3) EX_UNAVAILABLE
+	else
+		printf "%s\n" "$location"
+	fi
+
+	shift
+done