学习笔记
Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 2740 (unattended-upgr)
1.杀死进程
sudo kill 2740
2.删除导致锁定的文件：
sudo rm /var/lib/dpkg/lock
3.再次进行 apt upgrade 就正常了
sudo apt upgrade
学习笔记
Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 2740 (unattended-upgr)
1.杀死进程
sudo kill 2740
2.删除导致锁定的文件：
sudo rm /var/lib/dpkg/lock
3.再次进行 apt upgrade 就正常了
sudo apt upgrade