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Zero Install Copyright Thomas Leonard, 2010 INTRODUCTION The 0launch command can be used to run a program, by giving it the program's full name (a web address or "URL"). It does not need to be installed or run as root. It does not write to any shared directories (like /usr/bin or /usr/lib). It stores downloads in a cache directory so that you don't need to download anything twice, and programs can still be used when you are off-line. A complete program is made up of many different components, typically written by different groups of people. Each component is available in multiple versions. 0launch is used when starting a program. Its job is to decide which implementation of each required component to use. An interface describes what a component does. Zero Install starts with the interface for the program you want to run (like 'The Gimp') and chooses an implementation (like 'The Gimp 2.2.0'). However, this implementation will in turn depend on other interfaces, such as 'GTK' (which draws the menus and buttons). Thus, Zero Install must choose implementations of each dependancy (each of which may require further interfaces, and so on). See http://0install.net/injector.html for details. INSTALLATION Zero Install uses the normal Python distutils method of installation. To install system-wide, run setup.py like this: $ sudo python setup.py install You can also install just to your home directory (this doesn't require root access): $ python setup.py install --home ~ --install-data ~/.local $ export PATH=$HOME/bin:$PATH Logging out and back in again will ensure $PATH and the Applications menu get updated correctly, on Ubuntu at least. USE To run a program by its URI: $ 0launch http://rox.sourceforge.net/2005/interfaces/Edit To create a short-cut: $ 0alias rox-edit http://rox.sourceforge.net/2005/interfaces/Edit For more information, see the man-pages for 0launch, 0alias and 0store. CONDITIONS This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA BUG REPORTS Please report any bugs to the mailing list: http://0install.net/support.html