I am building a small QT (C++) application where I ask user the software he want to install. Once he selected some packages a, b, c from the list all I have to do is run
sudo apt-get install a b c
One way of doing this is using Qprocess or System and run this command directly from C++. But I thought this would be a hack and wanted to do using apt-pkg C++ library. But sadly documentation is very sparse for this library :( I saw source codes of some similar softwares - Software updater ( apt-watch ) etc and found it too complex. Just to run above command, it has lot of code - Initializing pkgCacheFile, PkgIterator, pkgAcqArchive.
Do I have to do all this to run this simple command ? Isn't there a direct function which takes software name as argument and install it ? Where Can I get a sample working code for the same ?
Thanks
I suggest Packagekit.
Here's a link to its documentation page containing some examples
Related
Currently, I am working on the Ns3 simulator and now trying to enable the pyviz visualizer. According to the doc, I have downloaded the three dependencies which are
py27-pygtk
py27-pygoocanvas
py27-pygraphviz
Now in order to use this, I still need to enable the python bindings which I used /usr/bin/python2.7 ./waf configure wanna to check what needs for enabling python bindings. The result shows that
Python Bindings : not enabled (PyBindGen version not correct and newer version could not be retrieved)
So I checked the Doc and downloaded PyBindGen (version 0.18.0). The output shows
Installed /Library/Python/2.7/site-packages/PyBindGen-0.18.0-py2.7.egg
Processing dependencies for PyBindGen==0.18.0
Finished processing dependencies for PyBindGen==0.18.0
After I ran the configuration check the results still showed that PyBindGen version not correct and newer version could not be retrieved
So I presume that is that because I installed the wrong version of PyBindGen? If so how can I get the suitable version for enabling Python Binding?
I would appreciate if there is someone who can help me figure it out. Many thanks.
S.
According to the Google Group
Here is the resolution(tested it worked):
follow the instruction
hg clone http://code.nsnam.org/ns-3-allinone
cd ns-3-allinone && ./download.py
This will solve the Python Binding problem
Updated: after downloading this version of ns3. Solving the python binding problem. Then there will be another problem after running
./waf configure
it will show the result like this:
PyViz visualizer: not enabled (Missing python modules: gtk, goocanvas, pygraphviz)
Even though I have installed all of the three dependencies. So after some researches I found that there has another questions post So there is a guy gave the guessing that
" Waf found the standard Python here (/usr/bin/python is the Apple path), and you installed the python libraries using MacPorts.
Most probably you'll need to configure Python to point to the MacPort-based Python, or it will not see what you installed."
So according to How to: Macports select python
here is the solution:
port select --list python
sudo port select --set python python27
Hope it will help anyone come afterwards to use this.
S.
Just recently I have begun to review the code for a project produced by a friend roughly 4 years ago. However, to compile this project I need an outdated version of Qt (version 3.3.8). Much of the code used in this project isn't supported in the same style as Qt4. So I'd first like to obtain Qt3 before I transition to Qt4.
Ubuntu has decided to no longer carry "qt3-dev-tools". Ubuntu has limited the selection to "qt4-dev-tools" in its repository. So installing via the command line option (sudo apt-get install qt3-dev-tools) results in an error:
"Unable to locate package qt3-dev-tools."
So, from here I did some digging for a manual installation? I found a great website to help me through the process, but I'm not very knowledgeable about Ubuntu, or Linux in general. Step 1 was simple. But step 2 and onward stumped me. I'm supposed to be both adding the environment variables listed in step two to the .profile file and then setting them, correct?
In step 2, is logging in again just meant for users with the .login shell? When I type in $HOME/.qt-license of step three, I suppose I'm typing this into the terminal?. Same with the ./configure? Both of these commands return no such file exists.
Does anyone know a better walk through to install Qt3 files, or can give a quick breakdown of this tutorial?
The website tutorial:
http://krm.am.gdynia.pl/doc/qt-3.3.8/INSTALL
If u can get .rpm package then open it in ubuntu software centre . It will get installed.
http://download.qt.io/archive/qt/3/ try downloading the package for qt3 from this qt archive & install it.
I'm currently working on a project that I've been assigned. I'm going to program a gateway (also known as a router). I have a virtual setup with 3 virtual machines (3 debian 7.1 devices).
The first one represents the gateway (the router) and the two other represents two clients (computers) who are going to transmit information between each other, through the gateway. The two clients have static IP's for the virtual representation.
I have installed Code::Blocks for Debian on the gateway, and I'm planning to program this all in C++ (or C). I have not made up my mind entirely, but I plan to use C++ as for now.
I've searched around a little to find out how to create sockets in C++ so I can start getting a grip on stuff and start looking on some packets which I will send from Client1. There's a lot of different libraries it seems, but Boost is pretty much preferred as far as I've found. I can't quite get a grip on how to install boost for Debian and use it in code blocks, so if someone could explain it low tech wise for me..?
I've downloaded the most recent version of Boost and extracted it somewhere on the gateway. How do I install it and make it work for Codeblocks?
Thanks!
Integrating Boost in to Code::Blocks is beyond my ken, but here is how I acquire and install Boost under linux. This is particularly for version 1.54.0, but you can adjust for whatever version you prefer:
mkdir -p ~/dev/boost
cd ~/dev/boost
wget http://sourceforge.net/projects/boost/files/boost/1.54.0/boost_1_54_0.tar.gz
tar -zxf boost_1_54_0.tar.gz
cd boost_1_54_0
sudo ./bootstrap.sh
sudo ./b2 install
sudo ln -s /usr/local/include/boost_1_54_0/ /usr/local/include/boost
http://tuxarena.blogspot.in/2009/01/how-to-compile-and-install-codeblocks.html
The above link would be helpful.
Thanks & Regards,
Alok Thaker
I am trying to install the python wrapper for the ANN (approx near neighbors) c++ library: link is http://www.scipy.org/scipy/scikits/wiki/AnnWrapper . I am on Windows 7 32-bit.
Unfortunately the documentation is a bit terse and I am a newbie to programming in general, so I cannot decipher the instructions found within. I have not built a C++ library before and am not even sure how to get that far. Can anyone please guide?
Thanks!
gene
To install Rob Hetland's wrapper you'll need to execute the following command (or one very similar depending on the C compiler installed on your system) in the directory that you've extracted the archive into:
python setup.py build install
or
python setup.py build install --compiler=mingw32
If you don't have a C compiler, or are getting errors, try looking here:
potential issue + answer
potential issue + answer
Ming32 - gcc compatible compiler for Windows
Using Microsoft Visual Studio Express
My goal is to hop on to C++ programming language by doing a homework project on linux mint and learn some linux & c++ at the same time.
I intend to write a small desktop application to show current network traffic ( like DU meter in windows). I have following questions:
I noticed in mint there is an application called 'System Monitor' which also shows network history with info and graph like current download/upload of data and speed. Is it a good idea to get started by looking at the code for this ? how can I find the code for same in mint and dig into it ? pls help with some steps here if possible.
what tools do I need here for writing c++ application for/in linux mint ?
Which GUI library to use ( like in c# winforms , it offers user controls as part of GDI lib) on linux mint what do we have that offers user controls like window/button/panel/etc ?
Links to beginner level tutorials will be helpful.
Hoping NOT to re-invent the wheel completely here. Would love to re-use some lib that do the network traffic part, ideas ?
PS: i know this post reads 'wanna be' - I am really excited to kickstart with some c++. Will rephrase this post with more precise questions.Hunting in the dark at this point being a c# developer totally spoiled by windows.
Thanks in Advance!!! for tips on this...
The mint distribution is based on Ubuntu/Debian, so I assume that my Ubuntu approach also works on mint.
First
you need some tools, libraries and headers:
# install the standard toolchain (g++, make, etc.)
sudo aptitude install build-essential
# install the build dependencies for a desktop based networking tool
sudo aptitude build-dep gnome-nettool
Optionally
because you mentioned the system-monitor - it might be helpful to build the gnome-system-monitor from source:
# install the build dependencies for gnome-system-monitor
sudo aptitude build-dep gnome-system-monitor
# get the sources for the gnome-system-monitor
mkdir example
cd example
apt-get source gnome-system-monitor
# build the gnome-system-monitor
# note: you might have a different version. But I'm sure you get the idea ;-)
cd gnome-system-monitor-2.28.0
sh configure
make
Finally
you need something to develop and debug. A lot of unix developers recommend emacs or vi(m). But my personal opinion is that you should start with a "modern" GUI based IDE.
here's a collection of some commonly used IDEs:
Eclipse with CDT
NetBeans
Code::Blocks
Anjuta (was this used to develop the gnome-system-monitor ?)
CodeLite (which is my personal favorite)
see also: discussion on SOF regarding "the best" C++ IDE for Linux
People usually use text editors like (g)Vim or emacs to write C++ applications. If you've never seen them before they may be a bit overwhelming. You can also use IDEs like Geany, Anjuta, QtCreator, Eclipse...
I think the default desktop environment in Mint is GNOME which uses the GTK library. You could use GTK for your application. It is written in C but there is a c++ interface for it, gtkmm, and a tutorial for it on the projects site.
There is also Qt, which is the base of the K Desktop Environment or KDE. It is a very large library and has a pretty good IDE written in it, for it, QtCreator.
Finally, you should search stackoverflow because most of your questions have already been answered.
In answer to you "what tools do I need", you should at a minimum install g++, the standard C++ compiler on a GNU/Linux system.
Linux Mint is based on Ubuntu (which is in turn based on Debian), so for a binary like gnome-system-monitor, the command
apt-get source $(dpkg -S $(which gnome-system-monitor) | cut -d: -f1)
will download and unpack the source package for it in the current directory. Note that it probably depends on a number of libraries, that can be found in different packages. You can see what these are with apt-cache show package_name, and libraries often have associated development packages named with -dev that contain the associated headers and statically-linked archives. You can find the dev package names by searching using apt-cache search foo, where foo is the base name of the library package you're interested in.