Mit dem eigenen WLAN und einer kleinen Linux Box kann man ganz einfach einen open source uPNP Netzwerkstreamer für das Wireless Netzwerk aufsetzten. Dazu benötigt man lediglich ein Linux System (hier Ubuntu Lucid Lynx), Handbrake zum konvertieren der Videos ins MP4 format und Mediatomb und auf dem iPad/iPhone MLPlayer Lite.
ExactImage {en} ist eine Sammlung von Kommadozeilen-Werkzeugen zur Bearbeitung von Grafik-Dateien. Sie wurde von der Firma ExactCODE {en} als Alternative zu ImageMagick für Archivista {ch} entwickelt. Hauptaugenmerk lag dabei auf der Geschwindigkeit; einige Konvertieroptionen werden - verglichen mit ImageMagick - in bis zu 20facher Geschwindigkeit durchgeführt. Das Programm eignet sich somit auch für "schwachbrüstige" Rechner. Es werden etliche Werkzeuge bereitgestellt, die gerade für die Texterkennung (OCR) benötigt werden.
I thought I'd kick off my Citrix blog with a question I get pretty often from Linux enthusiasts: how to install unsupported Linux distributions on XenServer 4.1.
The most common solution people find is to use the "Other Install Media" template, insert the distribution installation CD, and find that the mouse cursor doesn't work when they boot into X11. The reason for this is that they are using the hardware-assisted emulation mode of installing Linux. In this mode (dubbed "HVM"), all input and output is emulated, and in particular the mouse interface uses the USB tablet interface. If the distribution doesn't include a driver for USB tablets, then no mouse will appear.
Windows guests run at high-speed in HVM mode due to the installation of the XenServer tools which install high-speed drivers, but these are not necessary for Linux distributions since they can be run in para-virtualized mode (dubbed "PV"). This involves obtaining a Xen-enabled PV kernel from the distribution, and modifying the VM record in XenServer to boot into this kernel instead of HVM mode. The XenServer built-in templates for popular distributions such as RHEL, CentOS or SUSE Linux already automate all this and are in PV mode from the installer onwards.
We run a big share of Xen virtual servers spanned over multiple servers and if you want to use the full or best capability of Xen, I would suggest LVM (Logical Volume Manager), it makes life a lot easier, especially for those who do not run a RAID setup (We run RAID10 on all VM nodes) as you can split the partition over multiple hard drives. I’m not going to cover setting up the LVM as there are loads of tutorials on how to do that but I will rather cover the best way to migrate a LVM volume.
I have recently had reason to convert an Access MDB file to CSV for use in a mysql database. I don't like the idea of an Access database on a production server and Microsoft has been agreeing since 1999.
As it turns out it is actually very easy, there is GPL software available for the job at http://mdbtools.sourceforge.net/. If you are using Ubuntu or Debian you can use apt-get install the mdbtools package.
To get the list of tables, you run the following command:
mdb-tables database.mdb
You can then get a CSV version for each table using:
mdb-export database.mdb table_name
You can also convert the mdb into a format required by MySQL. First you must get the put the table schema into the database using the following command:
mdb-schema database.mdb | mysql -u username -p database_name
You then import each table by running:
mdb-export -I database.mdb table_name | sed -e 's/)$/)\;/' | mysql -u username -p database_name
Sed is required as mdb-export doesn't put a semi-colon at the end of each insert statement, which MySQL definately doesn't like.
After running this, you can now be rid of the horror that are Access MDB files :)
Dieser Artikel beschreibt, wie man das Energiemesssystem EM 1000 mit einem EM 1000-WZ Strommesssensor unter Debian einrichtet und die Messwerte mit Hilfe von Cacti darstellt.
current power graph
Zum Betrieb wird das “ftdi_sio” Kernel Modul benötigt. Bevor man es einsetzen kann werden jedoch die “vendor” und “product” IDs benötigt.
Traditionally, booting an Ubuntu installation with the root filesystem on a degraded RAID drops the system into a busybox prompt in the initramfs.
This is a very conservative approach, allowing the system administrator to consciously recognize that the system has lost a RAID disk, and preventing the system from booting into an unprotected situation.
How to restore Grub from a live Ubuntu cd.
This will restore grub if you already had grub installed but lost it to a windows install or some other occurence that erased/changed your MBR so that grub no longer appears at start up or it returns an error.
You can extract sound from a DVD, one track at a time or a chapter at a time. Some simple command line examples should suffice to demonstrate how this is done.
GNOME Do allows you to quickly search for many items present in your GNOME desktop environment (applications, Evolution contacts, Firefox bookmarks, files, artists and albums in Rhythmbox, Pidgin buddies) and perform commonly used actions on those objects (Run, Open, Email, Chat, Play, etc.).
This is an attempt to add support for the E3 chipset based scanners such as the Genius Vivid Pro USB scanner. In theory it should support the following scanners as they use the same chipset. Can you please let me know if your scanner is supported.
* Genius Vivid Pro USB
* Primax Colorado USB 19200
* Visioneer OneTouch 7600
* Visioneer OneTouch 6100
* IBM IdeaScan 2000 USB
* LG Electronics Scanworks 600U
You may encounter the following warning message at Perl startup:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LC_ALL = "En_US",
LANG = (unset)
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").