ubuntu1804 安装软件提示E: Could not get lock /var/lib/dpkg/lock-frontend
刚装好系统，想安装一个软件，居然报错，提示其他人正在安装。
abhishek@nuc:~$ sudo apt install grub-customizer
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
接下来得找出来是谁在安装软件
abhishek@nuc:~$ ps aux | grep -i apt
root 1464 0.0 0.0 4624 772 ? Ss 19:08 0:00 /bin/sh /usr/lib/apt/apt.systemd.daily update
root 1484 0.0 0.0 4624 1676 ? S 19:08 0:00 /bin/sh /usr/lib/apt/apt.systemd.daily lock_is_held update
_apt 2836 0.8 0.1 96912 9432 ? S 19:09 0:03 /usr/lib/apt/methods/http
abhishek 6172 0.0 0.0 21532 1152 pts/1 S+ 19:16 0:00 grep --color=auto -i apt
元凶找到：apt.systemd.daily
这个是检查更新的服务，禁用掉即可。
sudo systemctl disable apt-daily.timer
sudo systemctl disable apt-daily-upgrade.timer
sudo reboot
作者：kelsel
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