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Commands

Extend partition size

    1. Get PV (Physical Volume) name (Ex: /dev/sda1) 
      sudo pvs
    2. Resize the PV 
      sudo pvresize /dev/sda1
    3. Get root logical volume name (Filesystem value of / row; ex: /dev/mapper/ubuntu--vg-root) 
      df -h
    4. Expand logical volume 
      sudo lvextend -r -l +100%FREE /dev/mapper/ubuntu--vg-root

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Create sudo user

First create the user:

adduser sammy

Add user to the sudo group:

usermod -aG sudo sammy

Then either logout and log back in, or switch to the user:

su - sammy

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