====== Ubuntu - aptitude - Hold a package ======

Blacklist package updates.

<WRAP info>
**NOTE:**  This method works with both installed and uninstalled packages.
</WRAP>

----

===== Hold a package =====

<code bash>
sudo aptitude hold [package name]
sudo aptitude hold nginx
</code>

----

===== Remove the hold for a package =====

<code bash>
sudo aptitude unhold [package name]
sudo aptitude unhold nginx
</code>

----

===== Forbid a package from being upgraded to a particular version, while allowing automatic upgrades to future versions =====

This is useful for example to avoid a known broken version of a package such as grub:

<code bash>
sudo aptitude forbid-version {pkg}={version}
sudo aptitude forbid-version bash=5.0-6ubuntu1.1
</code>

When you try to upgrade package using the aptitude command you will see message:

<code bash>
sudo aptitude upgrade
</code>

The following packages will be upgraded:

<code>
  libcomerr2 libx11-data 
2 packages upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
....
</code>