ubuntu 18.04 で rc.local を使う

ubuntu 18.04 で rc.local を使うには、/etc/rc.local を作成し、chmod u+x する。

/etc/rc.local

$ ls -l /etc/rc.local
-rwxr--r-- 1 root root 60 Feb 20 13:25 /etc/rc.local
$ cat /etc/rc.local
#!/bin/sh

echo hogehoge...

$

systemd で管理されていていて、その内容は以下の通り。

/lib/systemd/system/rc-local.service

#  SPDX-License-Identifier: LGPL-2.1+
#
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

# This unit gets pulled automatically into multi-user.target by
# systemd-rc-local-generator if /etc/rc.local is executable.
[Unit]
Description=/etc/rc.local Compatibility
Documentation=man:systemd-rc-local-generator(8)
ConditionFileIsExecutable=/etc/rc.local
After=network.target

[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes
GuessMainPID=no