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Showing posts with the label linux

Ubuntu / Mint software updates problems

If you get error messages of the following kind: " E: Encountered a section with no Package: header. ..." Do the following: sudo rm /var/lib/apt/lists/* -vf sudo apt-get update It worked for me!

My RaspberryPi

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RaspberryPi , a $35 toy or the next disruptive technology and a possible building block for HPC ? This credit card sized board has a ARM11 processor and 512MB RAM. The board is powered via a micro USB connector. It has two built-in USB sockets, Ethernet and HDMI video. A schematic drawing of model B which I have can be found here . I installed  Raspbian  Linux, an optimized Debian version for Raspberry, on a 4GB SD card. A cool gadget for triggering thoughts about the future of computing. Enclosed below a few pictures I took, enjoy!

Diskless client installation

In the RHEL documentation (Chapter 4. "Diskless Environments", item #4) there is an in-accuracy in the rsync syntax usage. Instead of: rsync -a -e ssh golden_client:/ /diskless/whatever/root/ Use the following syntax which does not produce error messages: rsync -v -a -e ssh --exclude='/sys/*' --exclude='/proc/*' golden_client:/ /diskless/whatever/root/ Other comments (that I find critial in my experience): 1) Make sure the following RPM is installed in the client: busybox-anaconda (In my CentOS4.4 case it is: busybox-anaconda-1.00.rc1-5.x86_64.rpm) 2) Make sure there are no active NFS mounted partitions on the client before executing 'rsync'. 3) Make sure that the following 2 directories exist: /tftpboot/linux-install/msgs/ /tftpboot/linux-install/pxelinux.cfg and that in the tftp definition file under /etc/xinted.d/tftp the following line is set correctly: server_args = -s /tftpboot/linux-install 4) If pxelinux.0 does not exist under /tftp...