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使用Calibre移除电子书中的DRM

安装 Calibre

Calibre是一款Linux上的电子书管理软件,在archlinux下可以直接用pacman安装

sudo pacman -S calibre --noconfirm
resolving dependencies...
looking for conflicting packages...

Packages (1) calibre-3.26.1-1

Total Installed Size:  95.67 MiB
Net Upgrade Size:       0.00 MiB

:: Proceed with installation? [Y/n] 
(0/1) checking keys in keyring                     [----------------------]   0%
(1/1) checking keys in keyring                     [######################] 100%
(0/1) checking package integrity                   [----------------------]   0%
(1/1) checking package integrity                   [######################] 100%
(0/1) loading package files                        [----------------------]   0%
(1/1) loading package files                        [######################] 100%
(0/1) checking for file conflicts                  [----------------------]   0%
(1/1) checking for file conflicts                  [######################] 100%
(0/1) checking available disk space                [----------------------]   0%
(1/1) checking available disk space                [######################] 100%
:: Processing package changes...
(1/1) reinstalling calibre                         [----------------------]   0%
(1/1) reinstalling calibre                         [----------------------]   0%
(1/1) reinstalling calibre                         [----------------------]   0%
(1/1) reinstalling calibre                         [----------------------]   0%
(1/1) reinstalling calibre                         [----------------------]   0%
(1/1) reinstalling calibre                         [----------------------]   0%
(1/1) reinstalling calibre                         [#---------------------]   6%
(1/1) reinstalling calibre                         [##--------------------]  11%
(1/1) reinstalling calibre                         [###-------------------]  16%
(1/1) reinstalling calibre                         [####------------------]  21%
(1/1) reinstalling calibre                         [#####-----------------]  27%
(1/1) reinstalling calibre                         [########--------------]  37%
(1/1) reinstalling calibre                         [#################-----]  80%
(1/1) reinstalling calibre                         [####################--]  92%
(1/1) reinstalling calibre                         [#####################-]  99%
(1/1) reinstalling calibre                         [######################] 100%
:: Running post-transaction hooks...
(1/4) Updating icon theme caches...
(2/4) Arming ConditionNeedsUpdate...
(3/4) Updating the desktop file MIME type cache...
(4/4) Updating the MIME type database...
Unknown media type in type 'all/all'
Unknown media type in type 'all/allfiles'

安装插件

Calibre本身没有移除DRM的能力,需要借助第三方插件来实现:

  1. 下载 DeDRM_tools

    wget https://github.com/apprenticeharper/DeDRM_tools/releases/download/v6.6.1/DeDRM_tools_6.6.1.zip
    
    
    
  2. 解压zip包

    unzip -d DeDRM DeDRM_tools_6.6.1.zip
    
  3. 启动 Calibre

    calibre
    
  4. 选择 偏好选项 -> 插件 -> 从文件加载插件

    calibre-01.png

    calibre-02.png

  5. 选择 DeDRM_calibre_plugin 中的 DeDRM_plugin.zip

    calibre-03.png

  6. 重启 Calibre

移除DRM

安装插件后,在添加书籍的时候,Calibre会自动去掉DRM。而且无法手工对已经添加的书籍移除DRM。

如果要移除已经添加书籍的DRM,则需要先把书籍删掉后,在重新添加。