How to quickly create a 150 GB file on Ubuntu

There are various methods to create a 150 GB file on Linux, but the fastest way to do so is to use fallocate. Open a terminal window and enter the command below:

$ fallocate 150G filename <enter>

The above command creates a 150 gb file named filename.

. . . → Read More: How to quickly create a 150 GB file on Ubuntu

How to enable Cut, Copy and Paste menu options in Thunar after installing xubuntu desktop on Ubuntu 18.10

Upon installing the XFCE desktop, everything works fine. However, Cut, Copy and Paste menu options are greyed out in Thunar.

To enable this, select Settings -> Session and Startup -> Advanced and uncheck the box where it says Launch GNOME services on startup.

Reboot the computer and you will be able to cut, copy . . . → Read More: How to enable Cut, Copy and Paste menu options in Thunar after installing xubuntu desktop on Ubuntu 18.10

Wireless Adapter not detected in Linux Mint 19.1 on Dell Inspiron 5580

On a Dell Inspiron 5580, the wireless adapter is of Intel. The same is not detected when installing Linux Mint 19.1 the first time. This is because of the kernel not being updated.

Once Linux Mint 19.1 is installed, the later kernel 4.15.0-52 installed upon update, makes the wireless adapter work.

. . . → Read More: Wireless Adapter not detected in Linux Mint 19.1 on Dell Inspiron 5580

System scaling in Linux on 1920×1080 display (HiDPI)

Note system scaling works out of box with Cinnamon desktop. Open a terminal window and install it with:

$ sudo apt-get install cinnamon-desktop-environment <enter>

To do system scaling in the Gnome Desktop Environment, install the gnome-tweak tool. To do so, open a terminal window and enter the command as below:

. . . → Read More: System scaling in Linux on 1920×1080 display (HiDPI)

How to find out time taken in Linux by processes when starting the computer

To identify which system processes take how much time when booting your Linux system, open a terminal window, at type the following command:

$ sudo systemd-analyze blame <enter>

How to debloat, remove crapware from Xiaomi Redmi Note 5 Pro smartphone

Never look a gift horse in the mouth..

If you are one of those who is a technology connoisseur and love to compare specifications of smart phones before making a purchase decision, you need to be aware that the Xiaomi Redmi Note 5 Pro with 6 GB Internal RAM, best display and camera is . . . → Read More: How to debloat, remove crapware from Xiaomi Redmi Note 5 Pro smartphone

How to de-brick or unbrick or recover TP-Link WDR-4300 wireless router

Due to a wrong update of firmware, I bricked the TP-Link WDR 4300 wireless router I had. It was unused for a considerable period of time assuming that it had died due to hardware fault, with no hope of being resuscitated.

Finally, got some time to investigate it further and attempted to recover or . . . → Read More: How to de-brick or unbrick or recover TP-Link WDR-4300 wireless router

How to restart wifi after Suspend/Resume Ubuntu Linux

Ubuntu Linux installed on a Lenovo laptop randomly disables wireless networks altogether. Subsequently, it does not show any wireless networks too in Network Manager.

To resolve this issue, did the following:

$ sudo lshw -class network <enter>

Below is the result.

Notice the logical name wlp2s0b1 and the driver brcmsmac

*-network description: . . . → Read More: How to restart wifi after Suspend/Resume Ubuntu Linux

Install XFCE desktop and remove Gnome desktop on Ubuntu 18.10

To install Xubuntu after you have install Ubuntu 18.10 with the default Gnome desktop, make sure to take a backup of your data and then open a terminal window and run the following commands:

$ sudo apt-get install xubuntu-desktop <enter>$ sudo apt-get purge whoopsie orage gigolo catfish snap* parole* <enter>$ sudo . . . → Read More: Install XFCE desktop and remove Gnome desktop on Ubuntu 18.10

Speed up application startup time in Ubuntu

If you find your Linux computer is slow in starting up applications, you can install the preload package. It makes a small, discernible difference when launching applications.

To install, open a terminal window and run the following command:

$ sudo apt-get install preload <enter>

. . . → Read More: Speed up application startup time in Ubuntu

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