12-17-2008
You have to know ahead of time or lookup what the newest version is: off the net with maybe wget or from a file.. The OS does not know anything about what the newest version is.
I really do not understand what you are doing. If you are deploying something that requires version c of the OS (or some utility) on a box running version a, what do you intend to do in your code?
Code like that should abend with an error message complaining about versions, in the worst case.
A more user-friendly approach is to do what sysconf() does - learn about the system, then call code which is friendly to the environment. Find a way not to have to issue a nasty message. Especially if you want users to actually use the code.
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LEARN ABOUT DEBIAN
veusz_listen
VEUSZ_LISTEN(1) Veusz VEUSZ_LISTEN(1)
NAME
veusz_listen - command-line interface to the Veusz plotting application.
SYNOPSIS
veusz_listen [WindowTitle]...
DESCRIPTION
Veusz is a scientific plotting and graphing package. veusz_listen provides a command line interface to its scripting interface.
veusz_listen opens a new window (with an optional window title) and listens to stdin. It executes Veusz scripting commands, writing any
output to stdout.
veusz_listen is now deprecated. Please use veusz --listen instead.
SEE ALSO
veusz(1)
BUGS
Please report bugs at https://gna.org/bugs/?group=veusz
AUTHORS
Veusz was written by Jeremy Sanders <jeremy@jeremysanders.net>.
This manual page was written by Jeremy Sanders <jeremy@jeremysanders.net>.
COPYRIGHT
Copyright (C) 2003-2012 Jeremy Sanders <jeremy@jeremysanders.net>.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option) any later version.
On Debian GNU/Linux systems, the complete text of the GNU General Public License can be found in `/usr/share/common-licenses/GPL'.
1.15 2012-03-28 VEUSZ_LISTEN(1)