Qual é a diferença entre atualização e atualização de software?

Question

Alguém diz que "atualização" é para pequenas alterações e "atualização" é para grandes alterações. Estou muito confuso sobre atualização e atualização de software. E quando devo usar atualização vs. quando devo usar a atualização.

Alguém poderia explicar a diferença entre esses termos nos gerenciadores de pacotes?

    

Answer 1

Ubuntu / Debian etc com apt-get :

You should first run update, then upgrade. Neither of them automatically runs the other.

• apt-get update updates the list of available packages and their versions, but it does not install or upgrade any packages.
• apt-get upgrade actually installs newer versions of the packages you have. After updating the lists, the package manager knows about available updates for the software you have installed. This is why you first want to update.

- Source .

No entanto, com o Red Hat e o CentOS yum , o comando update perguntará se você deseja aplicar as atualizações que encontrar.

$ sudo yum update

pega uma lista de todas as atualizações disponíveis e pergunta se você gostaria de aplicá-las. Assim:

 [..] 
 kf5-sonnet-core                            x86_64                   5.33.0-1.el7                                    epel                   150 k
 kf5-sonnet-ui                              x86_64                   5.33.0-1.el7                                    epel                   141 k

Transaction Summary
==================================================================================================================================================
Upgrade  52 Packages

Total size: 15 M
Is this ok [y/d/N]: 

Quando o seu amigo se refere a atualizar como "pequenas alterações" e atualizar como "grandes alterações", ele realmente significa a diferença entre upgrade e dist-upgrade .

Do manual do apt-get:

   upgrade
       upgrade is used to install the newest versions of all packages
       currently installed on the system from the sources enumerated in
       /etc/apt/sources.list. Packages currently installed with new
       versions available are retrieved and upgraded; under no
       circumstances are currently installed packages removed, or packages
       not already installed retrieved and installed. New versions of
       currently installed packages that cannot be upgraded without
       changing the install status of another package will be left at
       their current version. An update must be performed first so that
       apt-get knows that new versions of packages are available.

   dist-upgrade
       dist-upgrade in addition to performing the function of upgrade,
       also intelligently handles changing dependencies with new versions
       of packages; apt-get has a "smart" conflict resolution system, and
       it will attempt to upgrade the most important packages at the
       expense of less important ones if necessary. The dist-upgrade
       command may therefore remove some packages. The
       /etc/apt/sources.list file contains a list of locations from which
       to retrieve desired package files. See also apt_preferences(5) for
       a mechanism for overriding the general settings for individual
       packages.