Update package manager troubleshooting commands

[isFakeAccount]

I was helping a user who would kept getting these errors.

Err:1 http://apt.pop-os.org/release jammy/main amd64 libudev1 amd64 249.11-0ubuntu3.16pop0~1749652895~22.04~34f0ce1
  404  Not Found [IP: 2600:9000:200b:4000:19:684d:e900:93a1 80]
Err:2 http://apt.pop-os.org/release jammy/main amd64 udev amd64 249.11-0ubuntu3.16pop0~1749652895~22.04~34f0ce1
  404  Not Found [IP: 2600:9000:200b:4000:19:684d:e900:93a1 80]
E: Failed to fetch http://apt.pop-os.org/release/pool/jammy/systemd/34f0ce17fd88296f9191dd4310f7c60c3086e943/libudev1_249.11-0ubuntu3.16pop0%7e1749652895%7e22.04%7e34f0ce1_amd64.deb  404  Not Found [IP: 2600:9000:200b:4000:19:684d:e900:93a1 80]
E: Failed to fetch http://apt.pop-os.org/release/pool/jammy/systemd/34f0ce17fd88296f9191dd4310f7c60c3086e943/udev_249.11-0ubuntu3.16pop0%7e1749652895%7e22.04%7e34f0ce1_amd64.deb  404  Not Found [IP: 2600:9000:200b:4000:19:684d:e900:93a1 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

He ran all the commands in the document but none of them fixed the issue except the .

sudo rm -rf /var/lib/apt/lists/*

I thought it might be helpful to mention this command here in case anyone faces similar issue.

[jacobgkau]

Thank you for the contribution.

This is a very highly used article (especially the block of commands at the top), so I'm hesitant to add a new command, especially when it's an entirely different command from the apt and dpkg commands otherwise listed, and when the need for its usage seems to be less than that of some of the other commands. However, it does logically fit in where you placed it in the block of commands.

I tested myself, and while -r is helpful in this instance since there are some directories within /var/lib/apt/lists/, -f is not needed when running with sudo. So I'm going to remove the f flag just to keep this as minimal and safe as possible.