--- /dev/null
+// Copyright 2018 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.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package unix_test
+
+import (
+ "log"
+ "os"
+
+ "golang.org/x/sys/unix"
+)
+
+func ExampleExec() {
+ err := unix.Exec("/bin/ls", []string{"ls", "-al"}, os.Environ())
+ log.Fatal(err)
+}