About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu
Debian Secrets Power tools for Power users
Wouter Verhelst
FOSDEM 2010
Wouter Verhelst Debian Secrets Idea: compare Debian-speci c features against other distributions' features Help!
About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu About this talk
Recycled from DebConf8 DebianDay
Wouter Verhelst Debian Secrets Help!
About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu About this talk
Recycled from DebConf8 DebianDay Idea: compare Debian-speci c features against other distributions' features
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu About this talk
Recycled from DebConf8 DebianDay Idea: compare Debian-speci c features against other distributions' features Help!
Wouter Verhelst Debian Secrets update-alternatives −−config x-terminal-emulator more info: man update-alternatives
About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu update-alternatives
multiple packages providing a particular command
Wouter Verhelst Debian Secrets more info: man update-alternatives
About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu update-alternatives
multiple packages providing a particular command update-alternatives −−config x-terminal-emulator
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu update-alternatives
multiple packages providing a particular command update-alternatives −−config x-terminal-emulator more info: man update-alternatives
Wouter Verhelst Debian Secrets −rwxr−x− − − 1 root cdwriters 401624 May 25 20:12 /usr/bin/wodim upgrades? dpkg-statoverride −−update −−add root cdwriters 0750 /usr/bin/wodim more info: man dpkg-statoverride
About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu dpkg-statoverride
Limit access to wodim to a group of users
Wouter Verhelst Debian Secrets upgrades? dpkg-statoverride −−update −−add root cdwriters 0750 /usr/bin/wodim more info: man dpkg-statoverride
About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu dpkg-statoverride
Limit access to wodim to a group of users −rwxr−x− − − 1 root cdwriters 401624 May 25 20:12 /usr/bin/wodim
Wouter Verhelst Debian Secrets dpkg-statoverride −−update −−add root cdwriters 0750 /usr/bin/wodim more info: man dpkg-statoverride
About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu dpkg-statoverride
Limit access to wodim to a group of users −rwxr−x− − − 1 root cdwriters 401624 May 25 20:12 /usr/bin/wodim upgrades?
Wouter Verhelst Debian Secrets more info: man dpkg-statoverride
About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu dpkg-statoverride
Limit access to wodim to a group of users −rwxr−x− − − 1 root cdwriters 401624 May 25 20:12 /usr/bin/wodim upgrades? dpkg-statoverride −−update −−add root cdwriters 0750 /usr/bin/wodim
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching update-alternatives Fooling the package system dpkg-statoverride Anticipating and correcting problems Debian menu dpkg-statoverride
Limit access to wodim to a group of users −rwxr−x− − − 1 root cdwriters 401624 May 25 20:12 /usr/bin/wodim upgrades? dpkg-statoverride −−update −−add root cdwriters 0750 /usr/bin/wodim more info: man dpkg-statoverride
Wouter Verhelst Debian Secrets too di cult search => brain goes banana debtags: more ne-grained searching Goplay! package: debtags, goplay more info: http://debtags.alioth.debian.org/
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: debtags
apt-cache search: works, but limited.
Wouter Verhelst Debian Secrets debtags: more ne-grained searching Goplay! package: debtags, goplay more info: http://debtags.alioth.debian.org/
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: debtags
apt-cache search: works, but limited. too di cult search => brain goes banana
Wouter Verhelst Debian Secrets Goplay! package: debtags, goplay more info: http://debtags.alioth.debian.org/
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: debtags
apt-cache search: works, but limited. too di cult search => brain goes banana debtags: more ne-grained searching
Wouter Verhelst Debian Secrets package: debtags, goplay more info: http://debtags.alioth.debian.org/
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: debtags
apt-cache search: works, but limited. too di cult search => brain goes banana debtags: more ne-grained searching Goplay!
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: debtags
apt-cache search: works, but limited. too di cult search => brain goes banana debtags: more ne-grained searching Goplay! package: debtags, goplay more info: http://debtags.alioth.debian.org/
Wouter Verhelst Debian Secrets searching for packages by control elds grep-available -FMaintainer '[email protected]' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage -sVersion package: dctrl-tools more info: man grep-available
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: grep-available
you know some things about the package
Wouter Verhelst Debian Secrets grep-available -FMaintainer '[email protected]' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage -sVersion package: dctrl-tools more info: man grep-available
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: grep-available
you know some things about the package searching for packages by control elds
Wouter Verhelst Debian Secrets grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage -sVersion package: dctrl-tools more info: man grep-available
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: grep-available
you know some things about the package searching for packages by control elds grep-available -FMaintainer '[email protected]' -sPackage
Wouter Verhelst Debian Secrets grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage -sVersion package: dctrl-tools more info: man grep-available
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: grep-available
you know some things about the package searching for packages by control elds grep-available -FMaintainer '[email protected]' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage
Wouter Verhelst Debian Secrets package: dctrl-tools more info: man grep-available
About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: grep-available
you know some things about the package searching for packages by control elds grep-available -FMaintainer '[email protected]' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage -sVersion
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching debtags Fooling the package system grep-available Anticipating and correcting problems Debian menu Searching for packages: grep-available
you know some things about the package searching for packages by control elds grep-available -FMaintainer '[email protected]' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage grep-available -FSource 'linux-2.6' -a -FPackage 'image' -sPackage -sVersion package: dctrl-tools more info: man grep-available
Wouter Verhelst Debian Secrets nVidia wants to install /usr/lib/libGL.so apt-get upgrade... instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so Then, and only then, install nVidia binary module and software Warning: do NOT use for con guration les more info: man dpkg-divert
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com
Wouter Verhelst Debian Secrets apt-get upgrade... instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so Then, and only then, install nVidia binary module and software Warning: do NOT use for con guration les more info: man dpkg-divert
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com nVidia wants to install /usr/lib/libGL.so
Wouter Verhelst Debian Secrets instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so Then, and only then, install nVidia binary module and software Warning: do NOT use for con guration les more info: man dpkg-divert
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com nVidia wants to install /usr/lib/libGL.so apt-get upgrade...
Wouter Verhelst Debian Secrets Then, and only then, install nVidia binary module and software Warning: do NOT use for con guration les more info: man dpkg-divert
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com nVidia wants to install /usr/lib/libGL.so apt-get upgrade... instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so
Wouter Verhelst Debian Secrets Warning: do NOT use for con guration les more info: man dpkg-divert
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com nVidia wants to install /usr/lib/libGL.so apt-get upgrade... instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so Then, and only then, install nVidia binary module and software
Wouter Verhelst Debian Secrets more info: man dpkg-divert
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com nVidia wants to install /usr/lib/libGL.so apt-get upgrade... instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so Then, and only then, install nVidia binary module and software Warning: do NOT use for con guration les
Wouter Verhelst Debian Secrets About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-divert: move les aside
Install nVidia binary module from nvidia.com nVidia wants to install /usr/lib/libGL.so apt-get upgrade... instead: dpkg-divert −−divert /usr/lib/libGL.so.Debian /usr/lib/libGL.so Then, and only then, install nVidia binary module and software Warning: do NOT use for con guration les more info: man dpkg-divert
Wouter Verhelst Debian Secrets game-writer-company goes bankrupt, and your CD-ROM is lost Buy new computer, want to play great-game-nonfree there too Use dpkg-repack to create new package to install on new computer package: dpkg-repack more info: man dpkg-repack
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-repack: Re-create a package le from an installed package
Install great-game-nonfree from game-writer-company
Wouter Verhelst Debian Secrets Buy new computer, want to play great-game-nonfree there too Use dpkg-repack to create new package to install on new computer package: dpkg-repack more info: man dpkg-repack
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-repack: Re-create a package le from an installed package
Install great-game-nonfree from game-writer-company game-writer-company goes bankrupt, and your CD-ROM is lost
Wouter Verhelst Debian Secrets Use dpkg-repack to create new package to install on new computer package: dpkg-repack more info: man dpkg-repack
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-repack: Re-create a package le from an installed package
Install great-game-nonfree from game-writer-company game-writer-company goes bankrupt, and your CD-ROM is lost Buy new computer, want to play great-game-nonfree there too
Wouter Verhelst Debian Secrets package: dpkg-repack more info: man dpkg-repack
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-repack: Re-create a package le from an installed package
Install great-game-nonfree from game-writer-company game-writer-company goes bankrupt, and your CD-ROM is lost Buy new computer, want to play great-game-nonfree there too Use dpkg-repack to create new package to install on new computer
Wouter Verhelst Debian Secrets About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu dpkg-repack: Re-create a package le from an installed package
Install great-game-nonfree from game-writer-company game-writer-company goes bankrupt, and your CD-ROM is lost Buy new computer, want to play great-game-nonfree there too Use dpkg-repack to create new package to install on new computer package: dpkg-repack more info: man dpkg-repack
Wouter Verhelst Debian Secrets apt-get install cron pulls in exim4 install bogus mail-transport-agent package to satisfy depends package: equivs more info: man equivs-build and man equivs-control, also see /usr/share/doc/equivs
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu Equivs: NIH
Install self-written not-invented-here MTA
Wouter Verhelst Debian Secrets install bogus mail-transport-agent package to satisfy depends package: equivs more info: man equivs-build and man equivs-control, also see /usr/share/doc/equivs
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu Equivs: NIH
Install self-written not-invented-here MTA apt-get install cron pulls in exim4
Wouter Verhelst Debian Secrets package: equivs more info: man equivs-build and man equivs-control, also see /usr/share/doc/equivs
About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu Equivs: NIH
Install self-written not-invented-here MTA apt-get install cron pulls in exim4 install bogus mail-transport-agent package to satisfy depends
Wouter Verhelst Debian Secrets About this talk Changing system behaviour dpkg-divert Searching dpkg-repack Fooling the package system equivs Anticipating and correcting problems Debian menu Equivs: NIH
Install self-written not-invented-here MTA apt-get install cron pulls in exim4 install bogus mail-transport-agent package to satisfy depends package: equivs more info: man equivs-build and man equivs-control, also see /usr/share/doc/equivs
Wouter Verhelst Debian Secrets apt-listbugs nds and lists release-critical bugs User can choose to decline downloading/installing apt-get or aptitude downloads packages apt-listchanges lists changelog items and/or NEWS.Debian items User can choose to decline installing packages: apt-listbugs, apt-listchanges
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable
Wouter Verhelst Debian Secrets User can choose to decline downloading/installing apt-get or aptitude downloads packages apt-listchanges lists changelog items and/or NEWS.Debian items User can choose to decline installing packages: apt-listbugs, apt-listchanges
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable apt-listbugs nds and lists release-critical bugs
Wouter Verhelst Debian Secrets apt-get or aptitude downloads packages apt-listchanges lists changelog items and/or NEWS.Debian items User can choose to decline installing packages: apt-listbugs, apt-listchanges
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable apt-listbugs nds and lists release-critical bugs User can choose to decline downloading/installing
Wouter Verhelst Debian Secrets apt-listchanges lists changelog items and/or NEWS.Debian items User can choose to decline installing packages: apt-listbugs, apt-listchanges
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable apt-listbugs nds and lists release-critical bugs User can choose to decline downloading/installing apt-get or aptitude downloads packages
Wouter Verhelst Debian Secrets User can choose to decline installing packages: apt-listbugs, apt-listchanges
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable apt-listbugs nds and lists release-critical bugs User can choose to decline downloading/installing apt-get or aptitude downloads packages apt-listchanges lists changelog items and/or NEWS.Debian items
Wouter Verhelst Debian Secrets packages: apt-listbugs, apt-listchanges
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable apt-listbugs nds and lists release-critical bugs User can choose to decline downloading/installing apt-get or aptitude downloads packages apt-listchanges lists changelog items and/or NEWS.Debian items User can choose to decline installing
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu apt-listbugs/apt-listchanges: reviewing before installing
install very-buggy-package from unstable apt-listbugs nds and lists release-critical bugs User can choose to decline downloading/installing apt-get or aptitude downloads packages apt-listchanges lists changelog items and/or NEWS.Debian items User can choose to decline installing packages: apt-listbugs, apt-listchanges
Wouter Verhelst Debian Secrets Pulls in several libraries You don't like the game; apt-get −−purge remove warzone2100 Libraries? debfoster/aptitude: keep track of what was installed manually or as a dependency deborphan: nd unused libraries needs to guess, may be wrong. packages: debfoster, deborphan
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100
Wouter Verhelst Debian Secrets You don't like the game; apt-get −−purge remove warzone2100 Libraries? debfoster/aptitude: keep track of what was installed manually or as a dependency deborphan: nd unused libraries needs to guess, may be wrong. packages: debfoster, deborphan
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100 Pulls in several libraries
Wouter Verhelst Debian Secrets Libraries? debfoster/aptitude: keep track of what was installed manually or as a dependency deborphan: nd unused libraries needs to guess, may be wrong. packages: debfoster, deborphan
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100 Pulls in several libraries You don't like the game; apt-get −−purge remove warzone2100
Wouter Verhelst Debian Secrets debfoster/aptitude: keep track of what was installed manually or as a dependency deborphan: nd unused libraries needs to guess, may be wrong. packages: debfoster, deborphan
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100 Pulls in several libraries You don't like the game; apt-get −−purge remove warzone2100 Libraries?
Wouter Verhelst Debian Secrets deborphan: nd unused libraries needs to guess, may be wrong. packages: debfoster, deborphan
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100 Pulls in several libraries You don't like the game; apt-get −−purge remove warzone2100 Libraries? debfoster/aptitude: keep track of what was installed manually or as a dependency
Wouter Verhelst Debian Secrets packages: debfoster, deborphan
About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100 Pulls in several libraries You don't like the game; apt-get −−purge remove warzone2100 Libraries? debfoster/aptitude: keep track of what was installed manually or as a dependency deborphan: nd unused libraries needs to guess, may be wrong.
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching Finding problems before installing Fooling the package system Keeping your system tidy Anticipating and correcting problems Debian menu debfoster, deborphan, aptitude: nding unused packages
apt-get install warzone2100 Pulls in several libraries You don't like the game; apt-get −−purge remove warzone2100 Libraries? debfoster/aptitude: keep track of what was installed manually or as a dependency deborphan: nd unused libraries needs to guess, may be wrong. packages: debfoster, deborphan
Wouter Verhelst Debian Secrets Modify through /etc/menu, /.menu package: menu more info: /usr/share/doc/menu/html, chapter 3 (syntaxis), chapter 6 (how to override)
About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu Changing the Debian menu
Standard menu in most window managers (not all desktop environments)
Wouter Verhelst Debian Secrets package: menu more info: /usr/share/doc/menu/html, chapter 3 (syntaxis), chapter 6 (how to override)
About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu Changing the Debian menu
Standard menu in most window managers (not all desktop environments) Modify through /etc/menu, /.menu
Wouter Verhelst Debian Secrets About this talk Changing system behaviour Searching Fooling the package system Anticipating and correcting problems Debian menu Changing the Debian menu
Standard menu in most window managers (not all desktop environments) Modify through /etc/menu, /.menu package: menu more info: /usr/share/doc/menu/html, chapter 3 (syntaxis), chapter 6 (how to override)
Wouter Verhelst Debian Secrets