Linux: Limit Transfer Bandwidth

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Transferring files to a server will often ending up in fully utilizing your upload bandwidth.
Download bandwidth gets slow because SYN-ACK are not coming through.
This blog post describes the option to limit the bandwidth for certain tools.

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Windows: RDP client settings

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RDP connections are quite easy, right? Just open the tool, punch in the server name and you are good? When you have a small screen it is hard to find the right resolution for the session. My setup/requirements: the Window needs to fit on a 13“ screen no scroll bars optimized for low bandwidth and Read More

GPS: create heatmap

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I use iSmoothRun to track my bike tours and upload it to Runkeeper and Strava. In addition to that I upload the tracks to Dropbox (as tcx files). setup http://www.sethoscope.net/heatmap/ mkdir -p ~/heatmap/tcx mkdir ~/heatmap/tcx2gpx cd ~/heatmap curl http://www.nightwatch.org.uk/tcx2gpx/tcx2gpx > ~/heatmap/tcx2gpx/tcx2gpx chmod +x ~/heatmap/tcx2gpx/tcx2gpx git clone https://github.com/sethoscope/heatmap.git git clone https://github.com/cbick/osmviz.git ln -s ~/heatmap/osmviz/src/osmviz ~/heatmap/heatmap/osmviz brew Read More

Linux: tcpdump

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tcpdump is a good tool to capture network traffic. Just start tcpdump and you see the packages, but you might want to filter it and write it to a file and look at it later on. Here are some common options you might find useful: network interface tcpdump -i eth0 specify the interface you want Read More

Greyhole: Increase disk space

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You can find the installation document here: Greyhole installation document This time I want to write about the operations you might need to perform after a while replace small disk remove the disk greyhole –stats greyhole –going=/data/disks/disk1/gh greyhole –stats greyhole –logs service samba stop service greyhole stop In case there was a landing zone on Read More

Linux: Screen

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A small tool that helps you to: 1. keep a program running while you disconnect the ssh session (irssi, big copy job, compile stuff, …) 2. deal with multiple programs in one terminal tmux is more modern and has for example a easier to read config file. But on CentOS it is for example not Read More

Fileserver with Greyhole (Installation)

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Some thoughts: some files are more important than others some files need redundancy, some others might not need it. several disks with different sizes no special hardware transfer speed is not very important possibility to verify the data integrity replace a small disk with a bigger disk to increase the total capacity That means: Drobo Read More

Fritzbox: read config with allcfgconv

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read passwords My new provider gave a fritzbox, but not the passwords for VoIP and remote login… But I want to have them 🙂 enable telnet First you need to get access to the OS, by enabling telnet dial the following number on your phone (dect or conventional phone works; the iPhone app was not working Read More

Windows: Debug a bluescreen

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open minidump After a BSOD you might want to find out the reason. Eventlog is a good starting point, but you should look into the minidump as well. Install You need to install the debug tools: http://www.microsoft.com/whdc/devtools/debugging/default.mspx Open The file you need to open is located in C:\Windows\Minidump cd “C:\Program Files\Debugging Tools for Windows (x64)” Read More

Cygwin: Install clusterssh

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The installation is not that hard, it just takes some time and you need to figure out what perl modules you need. Install the following cygwin packages: Perl/perl-Tk X11/tcl-tk X11/xorg-server Start the X Win Server as Administrator and install the perl modules: cpan X11::Protocol cpan Exception::Class cpan Try::Tiny cpan Readonly cpan Test::DistManifest cpan Test::Trap cpan Read More