用於啟動無 IP 的 Crontab 不起作用

我的網路伺服器有問題。通常，您通過 啟動 No-IP-DUC sudo noip2。我嘗試使用 cronjob 將其自動化。使用crontab -e，我創建了這個文件：

# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h  dom mon dow   command

@reboot cd /home/username/noip-2.1.9-1 && sudo noip2

它不起作用，我不知道為什麼。如果有人可以幫助我，那就太好了。

我找到了另一種解決方案：我將路由器連接到 No-IP，它現在可以工作了。

而不是做

cd /home/username/noip-2.1.9-1 && sudo noip2

我寧願執行“sudo crontab -e”以將 cronjob 添加為 root（並避免在 cronjob 中執行 sudo）。

另外，我了解您要執行 noip2 （即在 /home/username/noip-2.1.9-1 文件夾內）。所以我會將 cronjob 更改為

@reboot /home/username/noip-2.1.9-1/noip2

引用自：https://unix.stackexchange.com/questions/578457