我看过启动官方文档，但我无法将我的 Upstart 作业复制到 systemd。
新贵职位：
description "evercam_media"
start on filesystem or runlevel [2345]
stop on runlevel [!2345]
limit nofile 1000000 1000000
respawn
chdir /
setuid root
setgid root
exec watch -n1 '/usr/local/bin/run_evercam_media.sh'
post-stop exec sudo pkill beam
我在阅读文档文件时几乎复制了相同的内容
[Unit]
Description=evercam_media
[Service]
User=root
Group=root
WorkingDirectory=/
ExecStart=/bin/sh -ec "exec watch -n1 '/usr/local/bin/run_evercam_media.sh'"
ExecStopPost=sudo pkill beam
Restart=always
[Install]
WantedBy=multi-user.target
但每当我这样做时systemctl daemon-reload，systemctl status evercam_media.service我只得到错误
● evercam_media.service - evercam_media
Loaded: loaded (/etc/systemd/system/evercam_media.service; enabled; vendor preset: enabled)
Active: inactive (dead) (Result: exit-code) since Tue 2017-07-18 08:41:23 CEST; 12s ago
Process: 32596 ExecStart=/bin/sh -ec exec watch -n1 '/usr/local/bin/run_evercam_media.sh' (code=exited, status=1/FAILURE)
Main PID: 32596 (code=exited, status=1/FAILURE)
Jul 18 08:41:22 Ubuntu-1604-xenial-64-minimal systemd[1]: evercam_media.service: Unit entered failed state.
Jul 18 08:41:22 Ubuntu-1604-xenial-64-minimal systemd[1]: evercam_media.service: Failed with result 'exit-code'.
Jul 18 08:41:23 Ubuntu-1604-xenial-64-minimal systemd[1]: evercam_media.service: Service hold-off time over, scheduling restart.
Jul 18 08:41:23 Ubuntu-1604-xenial-64-minimal systemd[1]: Stopped evercam_media.
Jul 18 08:41:23 Ubuntu-1604-xenial-64-minimal systemd[1]: evercam_media.service: Start request repeated too quickly.
Jul 18 08:41:23 Ubuntu-1604-xenial-64-minimal systemd[1]: Failed to start evercam_media.
root@Ubuntu-1604-xenial-64-minimal:/etc/systemd/system#
正如他们在文档中提到的那样..
exec将会如此/bin/sh 'exec'，我已尝试上述方法，但失败了。但如果我在终端中执行此操作，exec watch -n1 '/usr/local/bin/run_evercam_media.sh'一切都会开始。
更新：
我只想让每个人运行 1 秒的 sh 脚本，这Watch是我最终使用的工具。