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Problem 1: Often company firewalls/web proxies only allow outgoing traffic to HTTP and HTTPS ports, but you also would like to connect to a remote SSH-server. A trick is to start the remote SSH-server at the port which is normally reserved for HTTPS-traffic. Most of the time it is in this way possible to connect … Continue reading “Connecting to remote SSH-server from within company firewalled network” |
Raspberry Pi: Your cheap Automatic Identification System (AIS) receiver
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In this tutorial you will learn how to teach your Raspberry Pi to become a brave Automatic Identification System (AIS) receiver. What is AIS? The Automatic Identification System (AIS) is an automatic tracking system used on/for ships. It transmits information like identification, position, course and speed. Ingredients Raspberry Pi (2 model B) DVB-T-DAB-FM receiver Client … Continue reading “Raspberry Pi: Your cheap Automatic Identification System (AIS) receiver” |
Parallel bash scripts – waiting for completion
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Assume we would like to execute several independent tasks in parallel and we would like to wait till these tasks are completed. For example we would like to copy a set of files to several (remote) hosts and get a signal when we are ready with this copying task to ALL hosts so we can … Continue reading “Parallel bash scripts – waiting for completion” |