List of useful commands

Node Version Manager (NVM)

NVM is a version manager for Node.js, designed to be installed per-user, and invoked per-shell. This allows you to easily install and switch between multiple versions of Node.js.

Install NVM

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash

Install Node.js

nvm install 20.19.0

Rsync

With Rsync you can copy files from one server to another. Mainly used for moving big files.

Copy files from a server to a remote server

rsync -av <folder>/ root@<IP>:/root/www/<folder>

Upgrade server storage

With this command you can upgrade the storage of a server. This is useful when you need more space on your server if you misconfigured it in the first place.

sudo vgdisplay

sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv

resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

And after these steps, you can check the available storage with df -h, or with sudo btop. Can be installed by; sudo apt install btop

Zscaler

With these commands you can enable and disable Zscaler on a Mac/Linux machine.

Enable Zscaler

open -a /Applications/Zscaler/Zscaler.app --hide
sudo find /Library/LaunchDaemons -name '*zscaler*' -exec launchctl load {} \;

Disable Zscaler

find /Library/LaunchAgents -name '*zscaler*' -exec launchctl unload {} \;
sudo find /Library/LaunchDaemons -name '*zscaler*' -exec launchctl unload {} \;

Find serial number

There's a nifty command to find the serial number of a linux server/device.

sudo dmidecode -s system-serial-number

There are also two alternatives:

cat /sys/class/dmi/id/product_serial
sudo dmidecode | grep -i "serial number"

Registry Proxmox