интерфейс управления пакетами Debian  (Debian package management frontend)
  
Команды (Commands)
When dselect is started it can perform the following commands,
       either directly if it was specified on the command line or by
       prompting the user with a menu of available commands if running
       interactively:
   access
       Choose and configure an access method to access package
       repositories.
       By default, dselect provides several methods such as cdrom,
       multi_cd, nfs, multi_nfs, harddisk, mounted, multi_mount or ftp,
       but other packages may provide additional methods, eg. the apt
       access method provided by the apt package.
       The use of the apt access method is strongly recommended.
   update
       Refresh the available packages database.
       Retrieves a list of available package versions from the package
       repository, configured for the current access method, and update
       the dpkg database. The package lists are commonly provided by the
       repository as files named Packages or Packages.gz.  These files
       can be generated by repository maintainers, using the program
       dpkg-scanpackages(1).
       Details of the update command depend on the access method's
       implementation.  Normally the process is straightforward and
       requires no user interaction.
   select
       View or manage package selections and dependencies.
       This is the main function of dselect. In the select screen, the
       user can review a list of all available and installed packages.
       When run with administrator privileges, it is also possible to
       interactively change packages selection state. dselect tracks the
       implications of these changes to other depending or conflicting
       packages.
       When a conflict or failed depends is detected, a dependency
       resolution subscreen is prompted to the user. In this screen, a
       list of conflicting or depending packages is shown, and for each
       package listed, the reason for its listing is shown. The user may
       apply the suggestions proposed by dselect, override them, or back
       out all the changes, including the ones that created the
       unresolved depends or conflicts.
       The use of the interactive package selections management screen
       is explained in more detail below.
   install
       Installs selected packages.
       The configured access method will fetch installable or upgradable
       packages from the relevant repositories and install these using
       dpkg.  Depending on the implementation of the access method, all
       packages can be prefetched before installation, or fetched when
       needed.  Some access methods may also remove packages that were
       marked for removal.
       If an error occurred during install, it is usually advisable to
       run install again. In most cases, the problems will disappear or
       be solved.  If problems persist or the installation performed was
       incorrect, please investigate into the causes and circumstances,
       and file a bug in the Debian bug tracking system. Instructions on
       how to do this can be found at https://bugs.debian.org/ or by
       reading the documentation for bug(1) or reportbug(1), if these
       are installed.
       Details of the install command depend on the access method's
       implementation.  The user's attention and input may be required
       during installation, configuration or removal of packages. This
       depends on the maintainer scripts in the package. Some packages
       make use of the debconf(1) library, allowing for more flexible or
       even automated installation setups.
   config
       Configures any previously installed, but not fully configured
       packages.
   remove
       Removes or purges installed packages, that are marked for
       removal.
   quit
       Quit dselect.
       Exits the program with zero (successful) errorcode.