Berikut daftar server repository lokal Ubuntu 20.04 LTS (Focal Fossa),
gunakan salah satu yang paling dekat dengan lokasi Anda:

kambing.ui.ac.id
deb http://kambing.ui.ac.id/ubuntu/ focal main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ focal-updates main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ focal-security main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ focal-backports main restricted universe multiverse
deb http://kambing.ui.ac.id/ubuntu/ focal-proposed main restricted universe multiverse
ftp.itb.ac.id
deb ftp://ftp.itb.ac.id/pub/ubuntu/ focal main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ focal-updates main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ focal-security main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ focal-backports main restricted universe multiverse
deb ftp://ftp.itb.ac.id/pub/ubuntu/ focal-proposed main restricted universe multiverse
kebo.pens.ac.id
deb http://kebo.pens.ac.id/ubuntu/ focal main restricted universe multiverse
deb http://kebo.pens.ac.id/ubuntu/ focal-updates main restricted universe multiverse
deb http://kebo.pens.ac.id/ubuntu/ focal-security main restricted universe multiverse
deb http://kebo.pens.ac.id/ubuntu/ focal-backports main restricted universe multiverse
deb http://kebo.pens.ac.id/ubuntu/ focal-proposed main restricted universe multiverse
kartolo.sby.datautama.net.id
deb http://kartolo.sby.datautama.net.id/ubuntu/ focal main restricted universe multiverse
deb http://kartolo.sby.datautama.net.id/ubuntu/ focal-updates main restricted universe multiverse
deb http://kartolo.sby.datautama.net.id/ubuntu/ focal-security main restricted universe multiverse
deb http://kartolo.sby.datautama.net.id/ubuntu/ focal-backports main restricted universe multiverse
deb http://kartolo.sby.datautama.net.id/ubuntu/ focal-proposed main restricted universe multiverse
mirror.poliwangi.ac.id
deb http://mirror.poliwangi.ac.id/ubuntu/ focal main restricted universe multiverse
deb http://mirror.poliwangi.ac.id/ubuntu/ focal-updates main restricted universe multiverse
deb http://mirror.poliwangi.ac.id/ubuntu/ focal-security main restricted universe multiverse
deb http://mirror.poliwangi.ac.id/ubuntu/ focal-backports main restricted universe multiverse
deb http://mirror.poliwangi.ac.id/ubuntu/ focal-proposed main restricted universe multiverse
Cara menambahkan repo ke sistem:
- Buka terminal (CTRL ALT T)
- ketikkan –> sudo nano /etc/apt/sources.list
- pastekan salah satu repo di atas.
- selesai, CTRL X lalu Y lalu enter
- lakukan update, sudo apt update