Boot Partitions, Install Multi-OS

See also: easy2boot, Automatic-Unattended-Install-of-Ubuntu.

When installing Ubuntu, it will decide what kind of partition to use:

Ubuntu decicison tree for using entire disk:

? installer booted in EFI mode or BIOS mode?


: use gpt and never make biosboot


? is the disk larg......



apt-get install quota


Add options usrquota,grpquota in /etc/fstab:

UUID=a5bcc8d7-asdf / ext4 errors=remount-ro,usrquota,grpquota 0 1

Set quota:

setquota -u -F vfsv0 USERNAME 4000000 5000000 0 0 /

4 000 000 ≈ 4GB.

OBS: block size is always 1 KB as unit, regardless file ......

VirtualBox Network and Skills


Two NICs are needed BEFORE installing the system to avoid messy issues.

To let the guests talk with each other, they need to have the same network, usually one of the "NAT network"s.

To access the guests from the host, the guests need another "Host-only" link.


Powershell In Case Of

To enable the running of scripts:

Run powershell.exe with admin rights and:

Set-ExecutionPolicy unrestricted

And answer A.


powershell.exe -noprofile -executionpolicy bypass -file .\my_script.ps1

Or using reg:

Windows Registry Editor Version 5.00


Bitvise SSH Client & Server


tunnelling (c2s)

(redirect traffic from C*lient ports to *S*erver ports)

The client will listen on **interface* and forward the request to the server, the server will forward the request to the destination.

See also: > # SSH Tunneling > ## port forwarding (direc......

Recommender System

This is a detailed reproduction of ref.

Sunny Summary

3 steps: preprocessing to extract: author, average sentence length, average word length, punctuation profile, sentiment scores, part-of-speech profiles/tags (only in code, not taken into the csv). content-wise k-mean......