Changing the boot order in linux

The standard linux system use grub (Grand UNified Bootloader) to manage its booting process. To change the boot order in linux, there is one file that you need to change which is /etc/default/grub.

To check which number your operating system resides, just run grub-reboot, and press double tab after the command to get the list. The list started from 0, so if your operating system of choice is at location 3, the number is 2.

1. Open /etc/default.grub with 

sudo nano /etc/default/grub

2. Change this line to suit your need

GRUB_DEFAULT=2

3. Save and exit

4. Update grub

sudo update-grub

That's all, try rebooting your machine and see if grub actually follow the configuration that you have setup.

How to install go in linux

Go is a programming language, created by engineers at Google in 2007 to create dependable and efficient software. Go is most similarly modeled after C.

To install go linux, the steps are very easy.

1. Download go package from https://go.dev/dl/

$ wget https://go.dev/dl/go1.18.linux-amd64.tar.gz

2. Extract the tar package

$ tar xvf go1.18.linux-amd64.tar.gz 

3. Include the go bin directory into PATH

echo "export PATH=\$PATH:/home/user/go/bin" ~/.bashrc

source ~/.bashrc

4. Test your go command

$ go version

go version go1.18 linux/amd64

Downloading torrent using command line

To download torrents using a command line, the easiest tool to use is transmission-cli. This tool is available in debian based distro and redhat based distro alike.

To use this tool, you have to install it first.

In debian based distro:

$ sudo apt install transmission-cli -y

In redhat based distro:

$ sudo yum install transmission-cli -y 

To use it with torrent file, first download the torrent file, and then run transmission-cli against the file

$ wget https://releases.ubuntu.com/20.04/ubuntu-20.04.2-live-server-amd64.iso.torrent

$ transmission-cli ubuntu-20.04.2-live-server-amd64.iso.torrent

To use it with magnet link, just run transmission-cli against the magnet link

$ transmission-cli magnet:?xt=urn:btih:eb6354d8d9b9427458af8bee90457101a4c1e8e3&dn=archlinux-2021.05.01-x86_64.iso