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See how to install and use pv command under Linux. Percentage completed (with progress bar).The pv command allows you to see the progress of data through a pipeline. I often use this tool to find out security related problems and tracking down other network and server related problems. Sudo ngrep -l -q -d eth0 "^GET |^POST " tcp and port 80 You can run queries such as: # grep all HTTP GET or POST requests from network traffic on eth0 interface # It follows most of GNU grep’s common features, applying them to the network layer. It will do a CDDB query over the Internet to look up your CD or use a locally stored CDDB entry. It will take an entire CD and convert it into a compressed audio format – Ogg/Vorbis, MPEG Audio Layer III, Free Lossless Audio Codec (FLAC), Ogg/Speex, MPP/MP+(Musepack) and/or M4A (AAC) format(s).
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Usually, the process of grabbing the data off a CD and encoding it, then tagging or commenting it, is very involved. At the end of each test you will get all data about the web server performance, total data transferred, latency, server response time, concurrency and much more. It can stress a single url such as /foo.php or multiple urls. I have had very good results with this tool. I often use this tool test a web server and apps. This tool allows me to measure the performance of web apps under duress. Siege is a multi-threaded http or https load testing and benchmarking utility.
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#1: siege – An HTTP/HTTPS stress load tester Most of the following tools are packaged by all major Linux distributions and can be installed on *BSD or Apple OS X. nixCraft picks his best open source terminal applications of 2012. However, the real beauty of Linux and Unix like operating system lies beneath the surface at the command prompt. Linux on the desktop is making great progress.