How to upgrade the some packages 1dpkg -L libssh2-1 # view the package use which files 2dpkg -s libssh2-1 # view the package infos 3# install the checkinstall 4echo "deb http://ftp.de.debian.org/debian bullseye main" >> /etc/apt/sources.list 5apt update 6apt install checkinstall 7tar -zxvf …

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