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By default, apt-rdepends shows a listing of each dependency a package has.It will also look at each of these fulfilling packages, and recursively lists their dependencies.
Install apt-rdepends in Ubuntu
sudo aptitude install apt-rdepends
This will install all the required packages.
Using apt-rdepends
apt-rdepends Syntax
sudo apt-rdepends [options] [pkgs ...]
apt-rdepends Examples
sudo apt-rdepends bash
Output looks like below
Reading package lists… Done
Building dependency tree… Done
bash
Depends: base-files (>= 2.1.12)
Depends: debianutils (>= 2.15)
PreDepends: libc6 (>= 2.3.6-6)
PreDepends: libncurses5 (>= 5.4-5)
base-files
Depends: awk
Depends: base-passwd (>= 2.0.3.4)
sudo apt-rdepends -d bash
Output Looks like below
Reading package lists… Done
Building dependency tree… Done
digraph packages {
concentrate=true;
size=”30,40?;
“bash” [shape=box];
“bash” -> “base-files”;
“bash” -> “debianutils”;
“bash” -> “libc6?[color=blue];
“bash” -> “libncurses5?[color=blue];
}
You can check man page for apt-rdepends from here
That’s fascinating. It would be really interesting to see how many of those dependencies are installed by default in an Ubuntu installation.