HowTos

How to tune Network interface

• https://www.cyberciti.biz/faq/linux-tcp-tuning/

List all connected network interface

• https://www.cyberciti.biz/faq/linux-list-network-interfaces-names-command/

Update path variable

Update path for current terminal session only

export PATH=$PATH:/the/file/path

Persist the change in .bashrc file if you need to automatically update it in each terminal session.

Ref: https://www.digitalocean.com/community/tutorials/how-to-view-and-update-the-linux-path-environment-variable

How to change hostname

Ref: https://phoenixnap.com/kb/ubuntu-20-04-change-hostname

How to increase a lvm partition

1. Run below command to get PV (Physical Volume) name (Ex: /dev/sda1)

sudo pvs

2. Resize the PV (Ex: sudo pvresize /dev/sda1)

sudo pvresize <PV name from above step>   

3. Run below command to get root logical volume name (Filesystem value of / row; ex: /dev/mapper/ubuntu--vg-root)

df -h

4. Expand logical volume (ex : sudo lvextend -r -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv):

sudo lvextend -r -l +100%FREE <root logical volume name from above step>

Ref: https://unix.stackexchange.com/a/583544/158650

how to establishing a bridge

• https://oper.io/?p=Ubuntu_Bridging_Network_Interfaces
• https://www.tecmint.com/create-network-bridge-in-ubuntu/

How to set timezone

• With TZ variable
• With the /etc/localtime symbolic link
• With the value of /etc/timezone.
• the ZONE= attribute from /etc/sysconfig/clock

Ref:

• https://linuxize.com/post/how-to-set-or-change-timezone-in-linux/
• https://www.freekb.net/Article?id=965#:~:text=On%20some%20distributions%2C%20the%20%2Fetc,being%20used%20by%20the%20system.&text=The%20%2Fetc%2Ftimezone%20file%20is,the%20%2Fetc%2Ftimezone%20file.