Archive for the Category: Linux
Fedora 18 and OpenCV version 2.4.3 is not the brightest combination. After upgrading from FC17, python script has stopped working with displayed "SURF missing" error. I decided to downgrade OpenCV to 2.3.1 until this library problem will be resolved. Downgrade process is a little tricky, but finally my python code started to work on FC18 the same as it worked on FC17.
Post describes Fedora Core 18 installation on an old PC with no CDROM and no USB boot option in BIOS. Fortunately, PC had dual boot (Fedora 13 and Windows XP), so existing GRUB was reused to start installation. The solution was to copy netinst.iso image to the USB device and to load new kernel and initial ramdisk from it.
In my case, "Error 15" occurred right after Fedora installation. It seems that I didn't check somewhere during installation to write GRUB to the /dev/sda disk. After first reboot (while finishing Fedora installation), GRUB displayed "Error 15" message and booting was stopped.
Mplayer Installation procedure is the same as is in my post "How to install mplayer in Fedora Core 12" but with some tweaks at the end. It seems that RPM Fusion repository didn't create needed symbolic links in /etc/pki/rpm-gpg directory. After symbolic link was created manually, mplayer / vlc installation has been finished successfully.
In this post I will show how to control time access to the Linux desktop. This was needed for my son as a kind of parental control for his Fedora Core 16. Good news is that nothing should be installed because all tools and mechanisms already exist on system. With a little configuration across few files, Linux desktop will be locked for GUI login in defined period of time.
Post explains problem and solution how to add shared windows printer to the Fedora Core 17 Linux. The whole point was in missing samba-client rpm. Solution is simple but it was not so obvious from error log or displayed message in popup.
In short, steps to create USB drive on Linux are: delete all, create partition, set partition type, mark it as active and write changes to disk. After new partition is craeted then with mkfs command it's only needed to create FAT32 file-system. This may sound scary, but the only tricky part is to use correct device name.
By default, Virtual Machine Manager on Linux (in my case on Fedora) will ask for root password before starting up. Every time I clicked on Applications -> System Tools -> Virtual Machine Manager password popup appeared no matter I'm the only user on my PC. If you have the same situation, here are few steps how to get rid of entering root password each time you start VM manager.
Simple trick of how to split and merge back large files on Linux using split and cat commands. split and cat commands belong to the GNU core utilities which are expected to exist on every Linux operating system. Means, every Linux distro is already prepared for split/merge files and you only need to know how.
Post describes how to copy installed virtual machine from Fedora to another RedHat family host. This procedure consists of disk image copy and VM configuration in few steps. In other words, guest OS can be very easily copied or cloned to the new.
Post describes how to create init script for urlsnarf and start it as a daemon on Fedora Linux. Process is simple, install dsniff package and create init script inside /etc/init.d/ directory. After activation with chkconfig, urlsnarf will start up on Linux boot.