Yum is an automatic updater and installer for rpm-based systems.

Included programs:

/usr/bin/yum		Main program

Yum is run with one of the following options:

• update [package list]

  If run without any packages, Yum will automatically upgrade every currently installed package. If one or more packages are specified, Yum will only update the packages listed.

• install <package list>

  Yum will install the latest version of the specified package (don't specify version information).

• remove <package list>

  Yum will remove the specified packages from the system.

• list [package list]

  List available packages.

See the man page for more information (man yum). Also see:

• web page: http://yum.baseurl.org/

• wiki: http://yum.baseurl.org/wiki

3.2.X Branch - yum-3_2_X
      Starting commit is roughly: a3c91d7f6a15f31a42d020127b2da2877dfc137d
         E.g. git diff a3c91d7f6a15f31a42d020127b2da2877dfc137d

You can build an RPM package by running:

$ make rpm

Note: Make sure you have mock and lynx installed.

You can run Yum from the current checkout in a container as follows (make sure you have the podman package installed):

$ make shell

This will first build a CentOS 7 image (if not built already) and then run a container with a shell where you can directly execute Yum:

[root@bf03d3a43cbf /] yum

When you edit the code on your host, the changes you make will be immediately reflected inside the container since the checkout is bind-mounted.

Warning: There's a (probably) bug in podman at the moment which makes it not see symlinks in a freshly created container, which, in turn, makes Yum not see the /etc/yum.conf symlink when it runs for the first time. The workaround is to touch /etc/yum.conf or simply re-run Yum.

Note: When you exit the container, it is not deleted but just stopped. To re-attach to it, use (replace the ID appropriately):

$ podman start bf03d3a43cbf
$ podman attach bf03d3a43cbf