Linux – What is Linux?

Linux is the core component of the operating system. In order for Linux to qualify as OS, it needs other GNU tools and components along with the Linux Kernel. It is the work of community of programmers who have willingly contributed their time and effort to make the software free and open-source.

Why I chose Beaglebone black for Sensor and Controller Board (Master Board): Sense and Act

How to choose the hardware platform for sensor and controller board.
1. Should be Open Source board and has good community support
2. Should be able to run Embedded Linux
3. Should have support for more connections

Introduction: Sense and Act

Why this project? The purpose of this new project is to explore and learn embedded Linux, embedded system and IoT in general. With this project will we can build an IoT reference platform for future projects. I would like to document and share my experience of building this platform so that it helps others whoContinue reading “Introduction: Sense and Act”

Linux – Running Commands as the Superuser

su you can run the su command and enter the root password to start a root shell. This practice works, but it has certain disadvantages: You have no record of system-altering commands. You have no record of the users who performed system-altering commands. You don’t have access to your normal shell environment. You have toContinue reading “Linux – Running Commands as the Superuser”

Linux – Directory Hierarchy Essentials

The  details  of  the  Linux  directory  structure  are  outlined  in  the  Filesystem Hierarchy Standard, or FHS (http://www.pathname.com/fhs/) Figure below  offers a simplified overview of the hierarchy, showing some of the directories under  /,  /usr, and /var. Notice that the directory structure under /usr contains some of the same directory names as /. Here are theContinue reading “Linux – Directory Hierarchy Essentials”

Linux – Archiving and Compressing Files

Now you need to master gzip and tar. gzip The program  gzip  (GNU Zip) is one of the current standard Unix compression programs. A file that ends with .gz  is a GNU Zip archive. Use  gunzip  file.gz  to uncompress  <file>.gz  and remove the suffix; to compress it again, use gzip file. tar To create anContinue reading “Linux – Archiving and Compressing Files”

Linux – File Modes and Permissions

Every Unix file has a set of permissions that determine whether you can read, write, or run the file. Running ls -l displays the permissions. Here’s an example of such a display: -rw-r–r–➊ 1 juser somegroup 7041 Mar 26 19:34 endnotes.html The file’s mode  ➊  represents the file’s permissions and some extra information. There areContinue reading “Linux – File Modes and Permissions”

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