Rsync server on Raspberry Pi over Debian

How to configure rsync server on Raspebery over Debian   First of all, you have to install rsync package: apt-get install rsync   Create and edit RSync configuration file: sudo vi /etc/rsyncd.conf   Here is my configuration file: uid=nobodygid=nogroupmax connections=50socket […]

Understanding Systemd Units and Unit Files

Introduction Increasingly, Linux distributions are adopting or planning to adopt the systemd init system. This powerful suite of software can manage many aspects of your server, from services to mounted devices and system states. In systemd, a unit refers to […]

How to handle “Unable to open /dev/mem: Operation not permitted”

In case you have kernel 4.9.4+ and you might need to use GPIO fucntions, sudenly you’ll receive an error message like the one described below: wiringPiSetup: Unable to open /dev/mem: Operation not permitted This is a kernel issue solved in […]