Gestión paquetes

• apt-get
• repos
• dpkg
• aptitude
• yum
• ppa
• apk (alpine)

• mirar si está en el sistema:

  dpkg --get-selections | grep <paquete>

• mirar el detalle del paquete:

  dpkg -l <paquete>

• actualizar paquete (no instala si no está):

  sudo apt-get --only-upgrade install <paquete>

• ejecutar prueba de instalación/actualización:

  sudo apt-get --only-upgrade install libxml2 --dry-run

sudo apt install gnupg -y
wget -O- <https://example.com/key/repo-key.gpg> | gpg --dearmor | sudo tee /usr/share/keyrings/<myrepository>-archive-keyring.gpg
sudo gpg --no-default-keyring --keyring /usr/share/keyrings/<myrepository>-archive-keyring.gpg --keyserver <hkp://keyserver.ubuntu.com:80> --recv-keys <fingerprint>

deb [signed-by=/usr/share/keyrings/<myrepository>-archive-keyring.gpg] <https://repository.example.com/debian/ stable main>
deb [arch=amd64 signed-by=/usr/share/keyrings/<myrepository>-archive-keyring.gpg] <https://repository.example.com/debian/ stable main>

/via: https://www.linuxuprising.com/2021/01/apt-key-is-deprecated-how-to-add.html

error haciendo apt upgrade, libreria no configurada, fallan dependencias (en este caso, libc6:i386)

sudo apt list --installed | grep libc6
sudo dpkg --configure -a