如何安裝緩存檔案在Ubuntu

Question

後更新我的Emacs到最新的版本（GNU Emacs的24.1.50.1）通過emacs-snapshot PPA：

sudo aptitude update 
sudo aptitude safe-upgrade 

當我使用rinari編程Rails項目我得到了一個警告。

我厭倦了等待作者解決這個問題。所以我決定將我的Emacs「回滾」到我安裝的以前的版本。

我找到在/ var /緩存/ apt/archives目錄/目錄檔案：

/var/cache/apt/archives/emacs-snapshot_2%3a20120608-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot_2%3a20120609-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot_2%3a20120614-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot_2%3a20120615-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot_2%3a20120622-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot_2%3a20120629-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot_2%3a20120701-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120608-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120609-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120614-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120615-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120622-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120629-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120701-1~ppa1~precise1_amd64.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120608-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120609-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120614-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120615-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120622-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120629-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-common_2%3a20120701-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120608-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120609-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120614-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120615-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120622-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120629-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120701-1~ppa1~precise1_all.deb 

那麼，如何安裝的Emacs的指定版本（老版）？

Answer 1

您可以選擇正確的版本，並知道它正在工作並手動安裝。請注意，包是相互關聯的，所以你可能需要一組相應的文件，如：

/var/cache/apt/archives/emacs-snapshot-common_2%3a20120608-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-gtk_2%3a20120608-1~ppa1~precise1_all.deb 
/var/cache/apt/archives/emacs-snapshot-bin-common_2%3a20120608-1~ppa1~precise1_amd64.deb 

當你確定你所需要的軟件包的版本，你只需用dpkg安裝：

$ sudo dpkg -i file1.deb file2.deb ... 

它可能會告訴你降級軟件包，但你可以繼續。您也可以卸載當前的emacs快照包。

另一種選擇是通過強制版本來選擇要從確切的存儲庫安裝的版本。首先，你確定你有可用的是什麼版本的回購：

$ apt-cache show emacs-snapshot 

這會告訴你是這樣的：

Package: emacs-snapshot 
Priority: optional 
Section: editors 
Installed-Size: 14390 
Version: 2:20120701-1~ppa1~precise1 

然後，您可以強制安裝的版本

$ sudo apt-get install emacs-snapshot=2:20120701-1~ppa1~precise1 

（可用包中顯示的版本）。