Adding more sources to PostX Gnu/Linux

All of the below should be done as root / sudo su . Caution is advised when operating as root or sudo su. Accidental and careless usage might be dangerous to system stability. Proceed with your own responsibility.

On a latest release of PostX Gnu/Linux contrib and non-free sources entries were accidentally left out. This will be fixed on later upcoming releases. For now you can add the following entries to sources list files:

deb bullseye contrib non-free
deb-src bullseye contrib non-free

deb bullseye-updates contrib non-free
deb-src bullseye-updates contrib non-free

deb bullseye-security contrib non-free
deb-src bullseye-security contrib non-free

Adding entries can be done manually by adding them into /etc/apt/sources.list. Alternatively, they can be added to file of your choosing under /etc/apt/sources.list.d directory structure.

For example you can make a file called with the sources list content, as seen above, and make it executable with chmod +x .

Finally, you can execute the as follows: cat > /etc/apt/sources.list.d/extra.list .

This will create a new file called extra.list under /etc/apt/sources.list.d folder. To apply changes to system, you still need to execute apt-get update. After this you are all done and new sources should be ready for usage.