Instructions

Replace your /etc/apt/sources.list contents to one of these sections

[Debian 13]

deb http://repo.iut.ac.ir/debian/ trixie main

deb http://repo.iut.ac.ir/debian/ trixie-updates main



[Debian 12]

deb http://repo.iut.ac.ir/debian/ bookworm main

deb http://repo.iut.ac.ir/debian/ bookworm-updates main



[Debian 11]

deb http://repo.iut.ac.ir/debian/ bullseye main

deb http://repo.iut.ac.ir/debian/ bullseye-updates main