We received a tip from blog readers Christian and Michael for alternatives to the command to delete all directories older than a certain period of time. These both work in bash and can be used in scripts to clean up old backup directories or any situation where you need to delete old directories from the [...]
Categories: Linux,Shell,System Administration
The Bash command environment, which is the namesake of this blog, is very flexible in that it allows you to manipulate the filesystem in many ways. Awk and sed are very powerful tools that allow you to do this rename with a simple one line command. This post will walk you through doing this with [...]
Categories: Code Samples,Linux,Shell,System Administration
This is my admittedly minor but I hope useful contribution to the TinyOS development community. TinyOS is an Operating System and development framework for Wireless Sensor Networks and other platforms which has a small footprint and is very energy conscious. The TinyOS source code is available for free online for many operating systems, however it takes [...]
Categories: Programs,Software,Ubuntu
Tagged: tinyos, ubuntos, Ubuntu, virtualbox
It is very easy to create a random file using the linux command line. Much like the command to fill a file with all zeros, for example a 1 Meg file: dd if=/dev/zero of=zero.filename bs=1024 count=1000 You do the same using /dev/urandom: dd if=/dev/urandom of=random.filename bs=1024 count=1000 Resulting in a 1MB file: 1000+0 records in [...]
Categories: Code Samples,Linux,Security,Shell
Tagged: command line, Linux, tips
EDID stands for Extended display identification data and is what many computer monitors and televisions with a VGA/HDMI use to tell the PC what resolution they support. Which, in theory at least, is great. However what I recently found out is that many LCD and Plasma televisions do not broadcast the correct 16:9 resolution via EDID, [...]
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