Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 2260 (unattended-upgr)

这个问题的提示显示，进程号为2260的(unattended-upgr)正在占用/var/lib/dpkg/lock-frontend这个文件锁，导致无法获取缓存锁。为了解决这个问题，你可以按照以下的步骤进行操作：首先，打开终端，运行以下命令：sudo kill -9 2260。这将终止进程号为2260的进程，释放对锁文件的占用。接下来，运行以下命令来删除锁文件：sudo rm /var/lib/dpkg/lock-frontend。然后，更新软件包列表：sudo apt update。完成这些步骤后，你应该可以正常安装软件了。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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