Today I tested the log rotation of a Linux server installation and therefore I needed a logfile that was larger than 10 MB. To create such a file of e.g. 11 MB size on the shell, I used this command: dd if=/dev/urandom of=test.log bs=1M count=11 The content of the file is random characters. If you ... Read more
Sometimes you might have to remove an existing GPT partition table from a hard disk. E.g. when you install another OS like Windows which can't cope with GPT partition records. Or, like in my case, when you want to add an HDD into a RAID where the other disks are using the traditional MBR partition ... Read more
In my research on Unity issues, I've observed that several users see nothing on the desktop after logging in (no sidebar, no top bar... nothing), just the background image. Even worse, when you press Alt+Ctrl+T, the terminal window doesn't show up either. Fortunately, I've found a few solutions to this problem as well, which I'll ... Read more
More than a decade ago, the world was introduced to the wonders of cryptocurrencies and the financial landscape has never been the same. First, there was Bitcoin, then came Litecoin, followed by Ripple and then Titcoin, and the list kept going on and on, and now it seems like with each passing day we are ... Read more
Gmail is undoubtedly one of the most popular web-based email services today. One of the key factors that make Gmail so popular is its ease of use, which in turn is largely due to its user-friendly design and layout. While most of Gmail's features are easily accessible, the ability to save an email (or an ... Read more
There are cases when you need to switch between two applications in your work. For example, a common use case is reading commands/instructions from a web page opened in a web browser and trying them out in a command-line terminal. I'm sure many of you are used to the Alt+Tab method of switching between application ... Read more
Most Linux servers are administered on the command line e.g. through an SSH connection. In the following tutorial, I will explain several shell commands that make it easy to view log files on the Linux command line (shell). These commands will work on all major Linux distributions incl. AlmaLinux, CentOS, Debian, Fedora, RockyLinux, and Ubuntu. ... Read more
The Linux make command is used to build and compile applications from source code, as it also builds and compiles source code dependencies using a "makefile". As a Linux user, you can use the make program to compile utilities and install them from the command line. However, sometimes users receive the error message "make: command ... Read more
Echo is a built-in Linux command-line utility that is used on standard output to display an argument i.e text or string. It is most generally used to display status text to the screen in batch files and shell scripts or used as a source part of a pipeline. You have seen or used it frequently ... Read more
OpenSSL Cryptography and SSL/TLS Toolkit is an open-source, full-featured package used in Transport Layer Security (TLS) and Secure Socket Layer (SSL) protocols to provide secure communication between client and server. This commercial-grade and robust toolkit is widely used by various programs like PHP, Internet servers, comprising the majority of HTTPS websites. Most Linux distributions come ... Read more