Yum is package manager used on several RPM system, used for update and install/uninstall additional packages on your distributions, also used for updating currently installed packages in your system. Continue reading
Here’s the installation instructions using remi repository for Mozilla firefox 4 final release on Fedora 14 Laughlin. Also check Mozilla Firefox 4 quick look at new features and installations instructions for different distributions Here. Continue reading
Remove obsolete packages, free up disk space this is a really important to run thees commands mentioned down here from time to time to keep your system performing really good and reduce lagging time for installing updates. In this quick [How To] will show you how to remove caches for Yum package manager. check Notes before going any further. Continue reading
webcam applications for capture photos, videos, multiple photos, and security cameras
One of the most common application located on gnome project, first it was written by google summer code project. really liked effects you can add using cheese ” noir, edge,warp,dice,hulk,….
also you can use this applications for talking multiple photos or videos, customize to specific resolution you want, working in many different distributions you can find many download options for debian based distributions, fedora, ubuntu, mint, …..
simple tool notify you if your camera is on or off. designed to work on gnome desktop work as well on KDE and Xfce
simply you can install it by terminal
sudo apt-get install cameramonitor
More information and download options for other distributions
camorama is a program i wrote to learn gtk and v4l. as you can see, i am still learning . it is pretty simple at the moment, and i hope to make it much more complete. i also plan to make it more generic, as i initially wrote it with only my own creative webcam 3 in mind. hopefully it will work with other cameras. i will test on anything i can get my hands on, but that might take a while.
right now you can change the video settings using the gui and apply some crappy filters i wrote to mess around with. it runs at a reasonable speed, but i would like to get the fps up as high as possible. still figuring that out. as for requirements, you will need at least gnome 2 and v4l. i haven’t used anything else crazy, and that should do it.
More informations and Download Options
Gspy retrieves images from a video4linux device and processes these into a daily mpeg movie on the disk drive. Each image is recorded with a time stamp to insure accurate real world correlation. Special motion detection algorithms are used to reduce the size of the daily movies by eliminating pictures with similar content as well as the normal compression obtained via the mpeg process. The result is a time lapse video per day with nonlinear time compression using only the images of interest. This program will only run on Linux machines which support a video4linux-device in 640×480 capture size. This software has been tested with the 2.4.0-test1 kernel, 2.4.0-test4 and the 2.2.16 kernel with the usb backport patch. You should have the Berkeley MPEG Tools installed if you wish to generate the MPEG files. Gspy can be used without the MPEG tools, as it will fill a directory with jpg images that can be processed or viewed at a later time. Versions from 0.1.6 include a user defined command that is executed on each alarm. This command string can include a token(s) “%f%” that will get replaced with the alarm picture filename. Typical uses would be to copy the alarm picture to a remote site using ftp or scp, email the picture to someone, play a sound annoucement… “Step away from the keyboard!”, turn on lights using a parallel port or X10 interface, or ???. Have FUN
More informations and Download options
My favorite webcam application for KDE, support many webcams, able to capture photos, videos, multiple photos. you can easily share your photos and videos directly from the application to facebook and twitter.
More informations and Download
that’s it for now.
Hello guys,
This is your first time you use any linux Distribution “Debian, Ubuntu, CentOS, Fedora, ….”
Some users have a lot of problems when they just starting to use any distributions, beginning with hardware problems, Drivers, Booting, dual Booting, Grub, package dependencies, NTFS mounting for removable hard driver, Graphics card “Nvidia, ATI”, resolutions,………………
so here will mention quickest resources it might help you out with those problems.
This is really common problem with most old machines, first time you use this distribution even it’s a live session or installed version, maybe you will find you display resolution is 640X400
with this resolution will be really difficult to use.
How to fix it?
EX. Section "Monitor"
Identifier "Monitor0"
VendorName ""
ModelName ""
HorizSync 30 - 70
VertRefresh 50 - 160
Modeline "1024x768_75.00" 82.00 1024 1088 -hsync +vsync
EndSection
this is one of the most common problem happen after installing Linux distribution specially with users already using windows operating system or other operating system on the same machine.
usually using grub version 0.97 , but with the new release grub version 1.97 beta faced a lot of problem, then stable version 1.98 working really good with new features for customization. much more multi booting option.
Problems
How to fix it?
Grub documentations and wiki are really useful. and really easy to use Here
“Understanding Fstab” post Thanks to bodhi.zazen
This is really useful post, I believe it cover all point about Mounting point, removable media, mounting for NTFS, FAT.
That’s it for now.
It’s the best way to run multiple operating systems at same time on your running operating system, in this article I will talk linux virtualization only, but some of these application I will mention works on many operating systems such as “Linux, Macintosh,Windows, …”
Virtualization not just for these operating systems only, also virtualization works on mobile and pocket PCs and I will talk about that on other article.
It’s a really good way run multiple operating system at same time, I use it a lot to try new distributions release like this one I reviewed for ubuntu 10.04 alpha 3 Lucid I was using sun virtual box.
Some users want to use Windows and any linux distribution on same time, not for testing, with complete installation on virtual machine.
Used to use sun virtualbox, KVM, and Virtual machine manager.
1. Sun Virtual Box
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL). See “About VirtualBox” for an introduction.
2. VMWare including “VMware server and player”
VMWare is a commercial virtualization platform that currently offers two free products: VMWare Player and VMWare Server (the latter with a free renewable yearly license). VMWare Player can play virtual appliances that have already been created, whereas VMWare Server (which has a broader range of features) allows the creation of virtual machines. In general, VMWare Server is recommended unless you only need to play an appliance. (Appliances will also run in VMWare Server). Users that wish to run servers (or processes) that need to be available to a network from within the virtual machine should use VMServer. If you wish to install a new OS within a virtual machine (other than in an appliance), you will need VMWare Server.
3. KVM
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM also requires a modified QEMU although work is underway to get the required changes upstream.
4. Xen
The Xen® hypervisor, the powerful open source industry standard for virtualization, offers a powerful, efficient, and secure feature set for virtualization of x86, x86_64, IA64, ARM, and other CPU architectures. It supports a wide range of guest operating systems including Windows®, Linux®, Solaris®, and various versions of the BSD operating systems. More
5. QEMU
QEMU is a generic and open source machine emulator and virtualizer.
When used as a machine emulator, QEMU can run OSes and programs made for one machine (e.g. an ARM board) on a different machine (e.g. your own PC). By using dynamic translation, it achieves very good performances.
When used as a virtualizer, QEMU achieves near native performances by executing the guest code directly on the host CPU. QEMU supports virtualization when executing under the Xen hypervisor or using the KVM kernel module in Linux. When using KVM, QEMU can virtualize x86, server and embedded PowerPC, and S390 guests.
http://wiki.qemu.org/Main_Page
6. Virtual machine manager
The “Virtual Machine Manager” application (virt-manager for short package name) is a desktop user interface for managing virtual machines. It presents a summary view of running domains, their live performance & resource utilization statistics. The detailed view graphs performance & utilization over time. Wizards enable the creation of new domains, and configuration & adjustment of a domain’s resource allocation & virtual hardware. An embedded VNC client viewer presents a full graphical console to the guest domain.
Hello guys,
In this post I already showed you how to install/Uninstall DEB packages.
Now I will show you how to install/uninstall RPM packages, and how to install sources RPMs
Distributions such as Redhat, Fedora, and CentOS using packages with .rpm extension
” rpm -uvh ” Will use this command to install packages
u : used for updating RPM packages to last version
v : show verbose messages while running command lines
h : Gives you hash “#” characters during installation process
Terminal :
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Access the directory for downloaded package for example : cd download
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Some packages you want to install required a source files to work with kernel version. Here is the command for installing source packages
Require root privilege
Your@username-laptop:~$ rpmbuild –rebuild package name ending with “.src.rpm” extension
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Your@username-laptop:~$ rpm -e package name
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That’s it for now.