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PowerShell

$URL="http://yzlab3.chem.nyu.edu/software/LogTech_unifying250.exe"
Invoke-WebRequest -URI $URL -OutFile unifying250.exe

WSL port forwarding (permanent solution)

powershell -Command "netsh interface portproxy add v4tov4 listenaddress=0.0.0.0 listenport=8888 connectport=8888 connectaddress=(wsl hostname -I) protocol=tcp"

Run GUI apps on WSL2 (GUI apps does not work with WSL 1)

  • Try Google Chrome
sudo apt install x11-apps -y
sudo wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
sudo apt install google-chrome-stable_current_amd64.deb
google-chrome

ImDisk

imdisk -a -o rw,rem,awe -p "/Q /FS:NTFS /A:64K /V:ramdisk /Y" -m Z: -s 6G
# -a attach a new volume
# -o option: read/write, removable, and use physical memory.
# -p format the volume. see the help of command format
# -m deiver letter
# -s size

Shutdown Log

  • eventvwr.msc
  • Event Viewer (local) -> Windows Logs -> System -> Actions -> Filter Current Log
  • Filter Event IDs: 1074 - initiated by an app; 6006 - turned off correctly; 6008 - improper shutdown

Install Windows to a USB Stick. (Microsoft discourages the installation)

  • I got a 128GB SanDisk Extreme PRO USB (SSD), and I want install Windows 10 on it.
  1. Install a clean Win10 in VirtrualBox. 1.1. If the target PC use UEFI instead of Legacy BIOS, then Win10 VM should be installed with EFI. 1.2. Turn on EFI support: VM Settings-> System -> Extended Features: Enable EFI (special OSes only)
  2. Mount the win10-installed 50GB disk in a Ubuntu VM.
  3. dd the disk to SanDisk USB.
dd if=/dev/sdb | pv | dd of=/dev/sdc bs=64K
  • If Win10 disk is 50GB then USB may have 70GB unallocated free space left.

Route

I got two Network Interface Cards (NICs), and each has its place in routing table. Since only the second NIC is connect to the internet, I will delete the route involving the 1st NIC.

Show the routing table

> route print

Result

===========================================================================
Interface List 
 14...MAC of the 1st NIC ......Brand of the 1st NIC                           # IP binds to this NIC is 192.168.10.2
 17...MAC of the 2nd NIC ......Brand of the 2nd NIC                           # IP binds to this NIC is 192.168.0.75
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0     192.168.10.1     192.168.10.2     55
          0.0.0.0          0.0.0.0     192.168.0.22     192.168.0.75     36
===========================================================================

With the help of command ipconfig, we should know the ip-interface binding relation.

  • Interface number of the 1st NIC is 14 and that of the 2nd NIC is 17.
  • Actually we don't need delete the 1st route since it has a higher metric value. Internet links go through the 2nd interface automatically.

Delete a route

> route delete 0.0.0.0 if 17

Virtualbox

sdelete.exe c: -z
C:\Progra~1\Oracle\VirtualBox\VBoxManage.exe modifymedium --compact D:\win10.vdi
  • Drag and compact [vbox_compact.bat]
REM drag a .vdi file on this batch file and it will be compacted
C:\Progra~1\Oracle\VirtualBox\VBoxManage modifyhd --compact "%~1"
pause

Python and PIP

  1. Download and install Python3
  2. Download and run get-pip.py
python get-pip.py

Firewall

netsh advfirewall firewall add rule name="sshd" dir=in action=allow protocol=TCP localport=22

Service

powershell Get-Service 
powershell Start-Service -Name "sshd" 
powershell Set-Service -Name "sshd" -StartupType Automatic

ACL

icacls administrators_authorized_keys /inheritance:r
icacls administrators_authorized_keys /grant SYSTEM:(F)
icacls administrators_authorized_keys /grant BUILTIN\Administrators:(F)

Backup Driver

Export-WindowsDriver -Online -Destination “D:\Drivers Backup”

NUC + Razer Core X

powercfg -duplicatescheme 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c
powercfg -setactive 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c

Mount USB stick on WSL

mount -t drvfs f: /some/path

RDP issue

RDP Message: You must change your password before logging on the first time. Please update your password or contact
  • We need save the RDP connection as a .rdp file then add a new line to it
    • Adding “enablecredsspsupport:i:0” to *.rdp file is used to disable “Credential Security Support Provider”(CredSSP) in the RDP client.