Files in Linux
1.0 Files There are two basic concepts in Linux - processes and files. The processes do things and files keep all the important data. An efficient filesystem is important for…
Connecting 7" touchscreen display to Raspberry Pi 4B
1.0 Introduction Raspberry Pi 4B has a Display Serial Interface (DSI) port for connecting a Raspberry Pi touchscreen display using a ribbon cable. In this post we will look at…
Uname command with examples
1. uname command The uname command prints information about the system. uname is a portmanteau word made up from "unix" and "name". uname can be called from the command line…
Getting started with Raspberry Pi
1.0 Raspberry Pi Raspberry Pi is a popular single board computer developed by the Raspberry Pi Foundation in the U.K. Raspberry Pi 4 Model B (Pi4B) was released in June…
systemd – System and service manager in Linux
1.0 Introduction systemd is the newer init system used in most Linux distributions since 2015. The first widely used init system was the System V init process, sysvinit. Ubuntu introduced…
Syslog
1.0 Syslog Syslog is a protocol for conveying event notification messages. Syslog was first developed by Eric Allman for logging as a part of the Sendmail project in the 1980s.…
Find user login history – last and lastb commands in Linux
1.0 last and lastb The last command gives a chronological list of user logins in a Linux system for a period of time. The lastb commands gives a similar list…
tmpfs in Linux
1.0 tmpfs tmpfs is a filesystem that resides in the main memory of a Linux system. tmpfs stands for temporary file system. In the case of disk files, a file…
Cut command in Linux
1.0 cut The cut command cuts sections of each line of input files and writes it on its standard output. It is mostly used for taking out a few columns…
tr command in Linux
1.0 tr The tr command is a filter which reads the standard input, translates or deletes characters and writes on its standard output. The tr command syntax is, tr [OPTION]...…