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無法透過命令列卸載應用程式

tag-icon • tag-icon command-line package-management dpkg
無法透過命令列卸載應用程式

嘗試透過命令列卸載應用程式時，出現以下錯誤：

dpkg: error: failed to open package info file '/var/lib/dpkg/available' for reading: 
    No such file or directory
E: Sub-process dpkg --set-selections returned an error code (2)
E: Couldn't record the approved state changes as dpkg selection states

我該如何解決？

答案1

此錯誤已在評論中解決：

sudo apt update

從http://manpages.ubuntu.com/manpages/bionic/man8/apt.8.html

更新（apt-get（8））

       update is used to download package information from all
       configured
       sources. Other commands operate on this data to e.g. perform
       package upgrades or search in and display details about all
       packages available for installation.

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