Debian Apt Package Management Hints
(.deb packages)

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Apt
See http://www.debian.org/doc/manuals/apt-howto/index.en.html

Finding...

  Source Archives...
    vim /etc/apt/sources.list     # Where to get sources from

    apt update                    # get package information lists

    apt list                      # packages
    apt list *mongo*              # can take a glob

    apt-cache search 'string'     # Search for package
    apt-cache show {package}      # Full information about a package
                                  #  (both installed and in repos)

    apt-cache showpkg {package}   # more general info (dependancys)
    apt-cache depends {package}   # just dependancys

Installed Packages Only...

    dpkg --search {file}          # what package provides this file
                                  # (relative or absolute path)

    dpkg -l                       # packages installed on system
    dpkg -L {package}             # what files are in this package

    # apt-get apt-file
    #apt-file update              # do this first
    #apt-file search  {file}      # what installed package is file part of
    #apt-file list {package}      # what files are in this package


Install/Upgrade...

  Install package
       apt-get install  {package}
    or apt-get remove {package}+

  Remove package and packages depanding on it.
    There is NO way to remove package and NOT the dependanys.
       apt-get remove  {package}
    or apt-get install  {package}-

      --purge     completely remove package configuration too

  Upgrade   (-u shows complete list of all packages which will be upgraded)
      apt-get -u upgrade
  Upgrade to new distribution
      apt-get dist-upgrade

    If a package is NOT upgraded (kept back) then run
      apt-get -u install {package}
    to see what the 'conflict' is.  As to way a package can not be removed
    during an dist upgrade...
      apt-get -o Debug::pkgProblemResolver=yes dist-upgrade

  Curses Interface Upgrade  (see http://www.debian.org/doc/ddp)
    Select new packages using...
      dselect
    Then upgrade using...
      apt-get -u dselect-upgrade

  Reinstall damaged package
    apt-get --reinstall install {package}

Public Keys
     apt-key list       what keys are known

  To update key see top-level page    http://ftp-master.debian.org/
     wget -O - http://ftp-master.debian.org/archive-key-4.0.asc |\
        apt-key add -

Miscellanious
  apt-show-versions -p {package}    whats the latest version of a package.
  apt-show-versions -u              upgradable packages

  apt-get clean|autoclean     clear out /var/cache/apt/archives/

  apt-cdrom                   add a cdrom to the /etc/apt/sources.list file

  apt-get -f install          Run these two command to
  dpkg --configure -a            clear locks and inconstancies.


Equivelence....
  Install a package from source, but tell the systen that it is
  equivelent to a specific version...
    see   http://www.debian.org/doc/manuals/apt-howto/ch-helpers.en.html


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Building Packages...
   http://www.debian.org/doc/manuals/apt-howto/ch-sourcehandling.en.html

get build dependancys
   apt-get build-dep imagemagick
Download the source package  .dsc
   apt-get source imagemagick
Build directly
   apt-get -b source imagemagick

Build after downloading
   dpkg-buildpackage -uc -b

install build .deb package
    dpkg -i imagemagick.deb

NOT FINISHED...
ImageMagick
  apt-get source imagemagick
  d=`echo imagemagick-*dfsg1`
  s=`r -n magick 'ls -t /var/ftp/pub/ImageMagick/ImageMagick-*.tar.gz'|head -1`
  cpdir -vP magick:$s .
  s=`basename $s`
  f $s
  cd ImageMagick-6.3.6
  mkdir debian
  cp ../d/debian/rules  debian
  cp ../d/debian/control debian
  cp ../d/debian/changelog debian
  #remove most of changelog - set current version
  #edit control and set current version


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Repositories

   dpkg-scanpackages
       *.deb
       Packages.gz

   dpkg-scansources
       *.orig.tar.gz  *.dsc  *.diff.gz
       Sources.gz

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