Man Linux: Main Page and Category List


     ubiquity - install Ubuntu from a live CD


     ubiquity [--desktop file] [--debug] [--pdb] [--cdebconf]
              [--no-migration-assistant] [--automatic] [--only] [--query]


     ubiquity is a graphical installer for Ubuntu, written largely in Python,
     using debian-installer (d-i) as a backend for many of its functions.  It
     is normally invoked from a desktop icon, and presents a "wizard"-style
     graphical user interface.  ubiquity must be run as root, and will
     escalate privileges for itself using gksudo, kdesu, kdesudo, or sudo as

     ubiquity has multiple frontends, including one written using GTK+
     (gtk_ui) and one written for KDE (kde_ui).  The first non-option
     argument, if any, is interpreted as the name of the frontend to use.

     The following options are available:

     --desktop file
           This option is passed through to gksudo to provide a better
           description for its privilege-escalation message.  It is only
           relevant when using the gtk_ui frontend.

     -d, --debug
           Run in debugging mode, sending verbose information to
           /var/log/installer/debug that may be useful to developers.  (The
           /var/log/syslog file is usually required in any case, along with
           /var/log/partman in the case of problems related to partitioning.)
           Note that passwords will be logged in debugging mode!

           Drop into the Python debugger in the event of a crash.  Only
           effective if ubiquity is being run from a terminal.

           Use cdebconf instead of the traditional Perl debconf
           implementation.  In future this may provide enough memory
           efficiency benefits to be made the default, but for now it is not
           really worthwhile and is therefore for experimental use only.

           Disable migration-assistant, which attempts to migrate documents
           and settings from other installed operating systems.  If the
           migration process causes problems, please file a bug and use this

           Skip over questions that have been pre-answered by use of a preseed
           file.  This is useful for unattended installations.

           Tell ubiquity that it is the only desktop program running so that
           it can customize its user interface to better suit a minimal
           environment.  This allows the installer to be run standalone,
           reducing memory requirements.

           Print the frontend that would be used and then exit.


     Ubiquity was formerly known as "Espresso", and originally as "Ubuntu
     Express", which is written and maintained by Javier Carranza
     <> and Juanje Ojeda Croissier
     <>.  This version draws on the work done on Ubuntu
     Express, but was renamed to avoid confusion, to reduce awkward branding
     considerations, and because Ubiquity concentrates on reusing
     debian-installer code and reducing duplicated translation and branding
     work as much as possible.  Ubiquity has now substantially diverged from
     Ubuntu Express and is an independent project.

     ubiquity was mainly developed by Colin Watson <> and
     Evan Dandrea <>, with contributions from many others.

     The mythbuntu_ui frontend was developed by Mario Limonciello