Proving the Network is Not the Problem With iperf – Packet Life

Sysadmin, Tutorial, Unix
Proving the Network is Not the Problem With iperf - Packet Life: "When an application fails to perform as expected, the network is often the first thing blamed. I suppose this is because end users typically view the network as the sole limiting factor with regard to throughput, unaware of the intricacies of application, database, and storage performance. For some reason, the burden of proof always seems to fall onto networkers to demonstrate that the network is not at fault before troubleshooting can begin elsewhere. This article demonstrates how to simulate user traffic between two given points on a network and measure the achievable throughput." (Via.)
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Manipulating the Clipboard from the Command Line

Apple, CLI, Macintosh, OSX, osx Server
Manipulating the Clipboard from the Command Line: "Copy and Paste are absolute necessities for virtually all computer users, and if you find yourself working in the command line frequently, you’ll want to know how to manipulate the clipboard. The commands pbcopy and pbpaste do exactly what they sound like, copy and paste through the command line. They’re actually quite powerful and you’ll be sure to find them useful the next time you’re hanging out with your bash prompt." (Via.)
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Notes on getting the most out of Screenly OSE for Raspberry Pi

Raspberry Pi
For those that are not familiar, Screenly is a Digital Signage System for the Pi. There is a open source edition of it (OSE) that you can just download and install on your own SD card. I've been messing around with it for the past few days and it's surprisingly simple and powerful. Below are some notes on how to fix various annoyances: ON 1080p SCREENS ONLY!! Normally when you use the web browser portion of Screenly you'll notice that it does not fill the screen (there is a black border around the screen). The video's play fine though. For some reason on 1920x1080 screen X windows does not detect the right resolution. To force this you need to modify/uncomment the following lines in config.txt file on the dos partition…
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Streaming 1080P video using Raspberry Pi (or BeagleBone Black)

Apache, BeagleBone Black, C920, CLI, DIY, embedded OS, Linux, Opensource, Raspberry Pi, Streaming, Tutorial, Video
I've finally got this project to a point were I can do a write up on it. The following hardware is needed: Raspberry Pi 512K version (or BeagleBone Black) Logitech C920 Webcam 16 GB micro SDHC card (can probably do it on 8GB too) Wireless dongle supported by linux (I'm using a TrendNet TEW-645UB which was pretty much plug and play) The goal of this project is to get the following installed and configured: CRTMP streaming server C920 install and config (v4l2), ffmpeg installation, boneCV installation from Derek Molloy's site configuring ddclient for dynamic DNS (optional) putting it all together and creating a webpage with embedded JWplayer to view the stream UPDATE: Sound works now on BeagleBone Black. On Raspberry you will run into alsa buffer xruns. See below for…
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