Un-allocated space is that disk space which is not inside any partition and is lying free. This space cannot be formatted to a file-system without first creating a partition in it. In order to use the space in unallocated space, you must either create a new partition in that space, or merge the space with… Read More »
“ls” (list directory contents) is one of the most commonly used commands in Linux. The command displays a list of all the files and directories in the current directory. It is one of the very first commands one should learn when new to Linux. The command is quite popular, works well enough, and can be… Read More »
Sysbench is a command line utility program available on linux that can be used to conduct different types of benchmark tests to measure performance of disk io, memory, cpu and mysql database. In another article we learned how to use sysbench to . In this particular article we take a quick look at how we… Read More »
Tcpdump is a command-line tool for capturing and analyzing network packets in Linux. Basically its a packet sniffer that also breaks them down into easy to read format for human beings. It can be a powerful tool for troubleshooting network connectivity issues by analyzing the network traffic on a system. Tcpdump works by listening for… Read More »
USB ports and devices come in a variety of speeds like USB 2.0 (480 Mbps), USB 3.0 ( 5 Gbps), USB 3.2 Gen 2 (10 Gbps) and so on. When you connect a device to your system on a usb port for the purpose of data transfer (for example an external ssd or hdd) you… Read More »
Qemu+kvm is an excellent free virtualisation solution for linux host systems. It can run any gui operating system pretty much like virtualbox or vmware. KVM provides virtualised access to cpu and memory whereas qemu emulates other hardware components like disk drives. Together they provide a complete solution to launch a virtual machine that a user… Read More »
Wget Command ‘Wget’ is developed as a part of the GNU Project. You can use it to download/extract data and content from web servers. Its name is a combination of the “www” and the word get. It supports downloading over multiple protocols like FTP, SFTP, HTTP and HTTPS. Wget is written in c and can… Read More »
Have you ever tried using Linux in Windows? If you do, then you need to use virtualization. Alternatively, you can do a dual-boot, which lets you use only one operating system at a time. Meet Windows Subsystem for Linux. This new Windows feature lets you access Linux directly from Windows. In this article, we’ll go… Read More »
rsync (remote synchronization) is a command-line tool for transferring and synchronizing files and directories locally and remotely in Linux. In other words, rsync is used for transferring files and directories, creating backups, mirroring files, and transferring large files between two locations. rsync identifies the differences between the source and destination files and directories using its… Read More »
Curl (acronym for “Client for url”) is a powerful command line tool and library for transferring files between two hosts. It supports a variety of protocols, including HTTP, SMTP, FTP, and POP3. A few things we can do with the curl command include: download files upload files testing services and APIs setting up custom headers… Read More »
Scanning for wifi networks will show you the ssids of all the wifi networks in your neighbourhood that your wifi adapter can detect or connect to. By default the gui network manager apps do this in kde and gnome desktop environments. However you can also scan the wifi networks from the command prompt. In this… Read More »
Aptitude Aptitude is the another command that can be used to manage packages from the commandline just like and apt-get. Aptitude is considered better and superior to apt-get for a number of reasons. One benefit of aptitude is that when removing a certain package, aptitude will remove all dependencies of that package as well, so… Read More »
DNF (Dandified Yum) is an RPM-based package manager capable of managing packages in Linux. Today, we’ll go through 20 DNF command examples. These examples will teach you how to manage packages with ease. You can use DNF to install and update packages. It is a popular package manager and comes pre-installed as the default package… Read More »
fdisk (fixed disk or format disk) is a command-line utility for creating and managing disk partitions in Linux and other Unix-based systems. In other words, fdisk is a command used to create, view, modify, and delete partitions on a hard drive. fdisk works by making changes to the disk’s partition table. The partition table stores… Read More »
What are Linux logs? Linux logs are a critical component of the OS that gives a snapshot of everything that has been happening in the system. It helps in tracking events within the system such as process initiation/failure, errors in running applications, login failures, boot-up process etc. They are essential for debugging running applications, tracking… Read More »
Lets say you have a wifi adapter on your linux machine whether a laptop or desktop and wanted to check what wifi standards (4/5/6) that are supported on it. One simple way is to check the model of the wifi adapter and lookup the specs online and get all technical details about. The other way… Read More »
Sometimes, we want to run Ubuntu in live mode and test a few programs or commands that need to be installed first. Ubuntu supports installing packages in a live session in the same way as in a fully installed setup. However, when trying to install package in a live session, often times the following error… Read More »
The fstab (File system table) file is a configuration file used by the Linux kernel to mount declared file systems during booting. It contains a set of rules describing where a file system should be mounted, access control for file systems, and additional configuration options for each file system. In this article, we’ll cover the… Read More »
Ram timings are technical specs about ram modules that are installed in laptops or desktops. These number indicate the performance of the ram module interms of how fast they can read and write data. The appear as 4 number set separated by a hyphen, for example like this: 16-16-16-39. Now these numbers tell us how… Read More »
The dmesg command is a powerful tool used to control and read log messages stored in the kernel ring buffer of Linux and other Unix-based operating systems. During boot-up and runtime, the kernel stores messages produced by device drivers, hardware devices, and kernel modules in a ring buffer. These stored log messages can be reviewed… Read More »