获取上传服务的日志信息。
sudo journalctl -l -u upload
-- Logs begin at Thu 2018-01-18 22:38:54 EST, end at Fri 2018-04-13 23:44:37 EDT. --
Apr 13 23:36:50 localhost systemd[1]: Started upload files into dropbox.
Apr 13 23:36:50 localhost systemd[1]: Starting upload files into dropbox...
Apr 13 23:36:50 localhost bash[120]: % Total % Received % Xferd Average Speed Time Time Time Current
Apr 13 23:36:50 localhost bash[120]: Dload Upload Total Spent Left Speed
Apr 13 23:36:50 localhost bash[120]: 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0curl: (6) Could not resolve host: content.dropboxapi.com; Un
Apr 13 23:36:50 localhost systemd[1]: upload.service: control process exited, code=exited status=6
对于第 6 行，在它的末尾，它不是Could not resolve host: content.dropboxapi.com; Un整行，我如何才能获取后面的字符Un？
如何获取整个日志信息？