上述错误是什么意思？什么是候选安装？ 我正在尝试做 sudo apt-get install munin-memcached 我收到此消息： Reading package lists... Done Building dependency tree Reading state information... Done Package munin-memcached is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package …
我mysql在命令行中尝试了： 我得到： The program 'mysql' is currently not installed. You can install it by typing: sudo apt-get install mysql-client-core-5.5 但是当我这样做时： sudo apt-get install mysql-client-core-5.5 但是我得到： Reading package lists... Done Building dependency tree Reading state information... Done mysql-client-core-5.5 is already the newest version. 0 upgraded, 0 newly installed, 0 to remove …
这似乎是一个鸡蛋问题。使用最常见的任务sudo是安装和删除软件。 sudo apt-get purge <appname> 但sudo本身可以删除。 sudo apt-get purge sudo # Do not run this command on production computers! 这就是乐趣的所在 ubuntu@ubuntu:~$ sudo bash: /usr/bin/sudo: No such file or directory 尽管很明显，sudo除了我以外，任何人都不会清除自己的头脑，但有人可能会愚弄人（而不是直接，以其十六进制模式或所谓的名称）运行此命令，或者有人会伪装成技术专家使用SSH 搞砸了。 那么有没有办法重新安装sudo？