我是 i5 桌面的菜鸟。我无法更新我的系统。终端内容如下,我输入“sudo pacman -Syu”后
[sudo] password for user-name: ********
:: Synchronizing package databases...
error: failed to update core (unable to lock database)
error: failed to update extra (unable to lock database)
error: failed to update community (unable to lock database)
error: failed to update multilib (unable to lock database)
error: failed to synchronize all databases
帮助!!