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apt-rdepends 和 apt-get install 输出的区别

tag-icon • tag-icon 10.04 apt
apt-rdepends 和 apt-get install 输出的区别

当我发出命令时apt-rdepends -p python-epydoc | grep NotInstalled，我得到以下输出

$ apt-rdepends -p python-epydoc | grep NotInstalled
Reading package lists... Done
Building dependency tree       
Reading state information... Done
  Depends: debconf-2.0 [NotInstalled]
  Depends: debconf-english [NotInstalled]
  PreDepends: perlapi-5.10.0 [NotInstalled]
  Depends: perlapi-5.10.0 [NotInstalled]
  Depends: perlapi-5.10.0 [NotInstalled]
  Depends: debconf-2.0 [NotInstalled]
  Depends: debconf-2.0 [NotInstalled]

当我发出sudo apt-get install python-epydoc

$ sudo apt-get install python-epydoc
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  blt graphviz lacheck latex-beamer latex-xcolor lmodern luatex pgf preview-latex-style prosper ps2eps python-docutils python-lxml python-pygments python-roman
  python-tk tcl8.5 tex-common texlive-base texlive-binaries texlive-common texlive-doc-base texlive-extra-utils texlive-font-utils texlive-fonts-recommended
  texlive-fonts-recommended-doc texlive-generic-recommended texlive-latex-base texlive-latex-base-doc texlive-latex-extra texlive-latex-extra-doc
  texlive-latex-recommended texlive-latex-recommended-doc texlive-luatex texlive-pictures texlive-pictures-doc texlive-pstricks texlive-pstricks-doc tipa tk8.5
Suggested packages:
  blt-demo graphviz-doc auctex texlive-lang-french epydoc-doc python-profiler python-lxml-dbg python-chardet tix python-tk-dbg tclreadline debhelper perl-tk dvidvi
  fragmaster latexmk xindy purifyeps psutils t1utils texpower
The following NEW packages will be installed:
  blt graphviz lacheck latex-beamer latex-xcolor lmodern luatex pgf preview-latex-style prosper ps2eps python-docutils python-epydoc python-lxml python-pygments
  python-roman python-tk tcl8.5 tex-common texlive-base texlive-binaries texlive-common texlive-doc-base texlive-extra-utils texlive-font-utils
  texlive-fonts-recommended texlive-fonts-recommended-doc texlive-generic-recommended texlive-latex-base texlive-latex-base-doc texlive-latex-extra
  texlive-latex-extra-doc texlive-latex-recommended texlive-latex-recommended-doc texlive-luatex texlive-pictures texlive-pictures-doc texlive-pstricks
  texlive-pstricks-doc tipa tk8.5
0 upgraded, 41 newly installed, 0 to remove and 68 not upgraded.
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输出apt-get install表明我必须安装命令未给出的包apt-rdepends -p python-epydoc | grep NotInstalled。

前一个命令中的软件包和后一个命令中要安装的软件包不应该NotInstalled是相同的吗？ 如果是，那么造成这种差异的原因是什么？

答案1

从 Ubuntu 8.10 开始，apt 默认不仅安装严格依赖项，还安装推荐的软件包。如果您不想让 apt-get 安装推荐的软件包，可以使用标志 --no-install-recommends

apt-get install --no-install-recommends python-epydoc

您还可以通过设置 APT::Install-Recommends "false"; 使该设置持久化。它可以位于 /etc/apt/apt.conf 中，也可以位于 /etc/apt/apt.conf.d/ 下的专用文件中。另请参阅 8.10 发行说明的以下部分。

https://wiki.ubuntu.com/IntrepidReleaseNotes#Recommended_pa​​ckages_installed_by_default

您可以告诉 apt-rdepends 也关注并显示推荐。这将为您提供更完整的输出。请注意，它将包含相当多的重复项等。

apt-rdepends -p --follow=1,2,4 --show=Depends,PreDepends,Recommends python-epydoc | grep NotInstalled

我使用 --follow=1,2,4 而不是实际命名 Depends、PreDepends 和 Recommends 的原因是Launchpad 错误 #315567

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