update timezone on Windows RDS server

run “cmd” with Administrator permission

list current timezone on local machine

C:\Windows\system32>tzutil /g
Pacific Standard Time

List all available timezone

C:\Windows\system32>tzutil /l
(UTC-12:00) International Date Line West
Dateline Standard Time

(UTC-11:00) Coordinated Universal Time-11

(UTC-10:00) Aleutian Islands
Aleutian Standard Time

update timezone to correct only

C:\Windows\system32>tzutil /s “AUS Eastern Standard Time”


verify the change

C:\Windows\system32>tzutil /g
AUS Eastern Standard Time

auto map network drive via powershell script

create a .ps1 script file with entry

“New-PSDrive -Name “S” -Root “\\scan” -Persist -PSProvider “FileSystem”

setup task schedule to run this mapping script

in Actions tab, create new Action

1: start a program

2: Program/script: powershell

3: Add arguments (optional): -File C:\Users\li_s\Desktop\MapNetworkDrive.ps1

netflix-proxy github repo install 

git hub address: https://github.com/ab77/netflix-proxy

it has issue to install on Ubuntu machine, due to python issue, init will fail as well

run following commands in sequence

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
#sudo apt-get install python3.6 - no need run this one
sudo install passlib   #install passlib
apt-get update\
  && apt-get -y install vim dnsutils curl sudo\
  && curl -fsSL https://get.docker.com/ | sh || apt-get -y install docker.io\
  && mkdir -p ~/netflix-proxy\
  && cd ~/netflix-proxy\
  && curl -fsSL https://github.com/ab77/netflix-proxy/archive/latest.tar.gz | gunzip - | tar x --strip-components=1\
  && ./build.sh

after done, need manual update the password to enable you login

root@VM-16-6-ubuntu:~/netflix-proxy/auth# . admin-reset.sh
Please enter a new admin password:
~/netflix-proxy/auth ~/netflix-proxy/auth

web management portal


Add IP

free up port 53 on ubuntu 20.04

It’s worth noting that you can free up port 53 by simply uncommenting DNSStubListener and setting it to no in /etc/systemd/resolved.conf. The other steps are for enabling a DNS server – without it, your system will not be able to resolve any domain names, so you won’t be able to visit websites in web browser, etc.

1. Edit /etc/systemd/resolved.conf with a text editor (as root), e.g. open it with Nano console text editor:

sudo nano /etc/systemd/resolved.conf

And uncomment (remove # from the front of the line) the DNS= line and the DNSStubListener= line. Next, change the DNS= value in this file to the DNS server you want to use (e.g. to use a local proxy, to use the Cloudflare DNS, etc.), and also change the DNSStubListener= value from yes to no.

This is how the file should look after you’ve made these changes (I’m using as the DNS server here, which is the Cloudflare DNS):


To save the file using Nano text editor, press Ctrl + x, then type y and press Enter.

2. Create a symbolic link for /run/systemd/resolve/resolv.conf with /etc/resolv.conf as the destination:

sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

Here, -s is for creating a symbolic and not hard link, and -f is for removing any existing destination files (so it removes /etc/resolv.conf if it exists).

3. Reboot your system.

Port 53 should now be free on your Ubuntu system, and you shouldn’t be getting errors like “listen tcp bind: address already in use” anymore.

You can check to see if port 53 is in use or not by running sudo lsof -i :53 – if port 53 is not in use, this command shouldn’t show any output.

You might like:


How to undo the changes

Do you want to undo the changes made by following the instructions in this article? This is what you must do.

1. Start by editing /etc/systemd/resolved.conf with a text editor (as root), e.g. open it with Nano console text editor:

sudo nano /etc/systemd/resolved.conf

And comment out (add # in front of the line) DNS= and DNSStubListener=no, then save the file. To save the file using Nano text editor, press Ctrl + x, then type y and press Enter.

2. Remove the /etc/resolv.conf symbolic link:

sudo rm /etc/resolv.conf

3. Reboot your system.

refer: https://www.linuxuprising.com/2020/07/ubuntu-how-to-free-up-port-53-used-by.html

Customize your Bash prompt

The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here is how to:



  • \u: current username
  • \h: hostname up to the first ., \H: full hostname
  • \w: current working directory, \W: same, but only the basename
  • $(__git_ps1 "%s"): your current git branch if you’re in a git directory, otherwise nothing
  • \$: if the effective UID is 0#, otherwise $
  • \d: the date in “Weekday Month Date” format (e.g., “Tue May 26”)
  • \t: the current time in 24-hour HH:MM:SS format, \T: same, but 12-hour format, @: same, but in 12-hour am/pm format
  • \n: newline
  • \r: carriage return
  • \\: backslash

Colors & Styles 

  • colors have to be escaped (see General), color codes should be followed by an m
  • put \[\e[‹code›m\] and \[\e[0m\] around the part of your prompt you want to style
  • where ‹code› is a ;-chain of:
    • x: attribute of the text
    • 3y: foreground color
    • 4y: background color
  • x:
    • 0: normal
    • 1: bold
    • 4: underline
    • 7: reverse
  • y is the color:
    • 0 black
    • 1 red
    • 2 green
    • 3 yellow
    • 4 blue
    • 5 magenta
    • 6 cyan
    • 7 white
  • example: \[\e[0;33m\]prompt:\[\e[0m\]

Save your settings by writing export PS1='...' to your .bashrc or .profile.


COPYexport PS1='\h \w$(__git_ps1 "(%s)") \$ '
=> mycomputer ~/apps/chess/tmp(master) $ _

export PS1='\[\e[33m\]\h\[\e[0m\]:\W\[\e[33m\]$(__git_ps1 "(%s)")\[\e[0m\] \u\$ '
=> mycomputer:tmp(master) tom$ _

# Henning's awesome TRON prompt 2.0.2 with current Git branch and success state of the last command (the syntax coloring here does not do it justice):
export PS1='`if [ $? = 0 ]; then echo "\[\033[01;32m\]✔"; else echo "\[\033[01;31m\]✘"; fi` \[\033[01;30m\]\h\[\033[01;34m\] \w\[\033[35m\]$(__git_ps1 " %s") \[\033[01;30m\]>\[\033[00m\] '
=> ✔ mycomputer ~/projects/platforms master > _

# Arne's epic timestamped prompt with return status indicator and status-colored (green if fresh, or red if unstaged, or yellow if staged) git branch:
export PS1='\[\e[01;30m\]\t`if [ $? = 0 ]; then echo "\[\e[32m\] ✔ "; else echo "\[\e[31m\] ✘ "; fi`\[\e[00;37m\]\u\[\e[01;37m\]:`[[ $(git status 2> /dev/null) =~ Changes\ to\ be\ committed: ]] && echo "\[\e[33m\]" || echo "\[\e[31m\]"``[[ ! $(git status 2> /dev/null) =~ nothing\ to\ commit,\ working\ .+\ clean ]] || echo "\[\e[32m\]"`$(__git_ps1 "(%s)\[\e[00m\]")\[\e[01;34m\]\w\[\e[00m\]\$ '
=> 03:13:37 ✔ arne:(master)~/projects/geordi$ _

# Arne's danger prompt for root use. No git information and alarming red and yellow (which you can't see here):
export PS1='\[\e[01;30m\]\t \[\e[31m\]\u\[\e[37m\]:\[\e[33m\]\w\[\e[31m\]\$\[\033[00m\] '
=> 03:13:37 root:/tmp/foo# _

# Kim's mix of those above with small changes. TRON promt with timestamp, return status indicator, hostname, git informations and working directory (but all non-bold).
export PS1='\[\033[01;30m\]\t `if [ $? = 0 ]; then echo "\[\033[01;32m\]ツ"; else echo "\[\033[01;31m\]✗"; fi` \[\033[00;32m\]\h\[\033[00;37m\]:\[\033[31m\]$(__git_ps1 "(%s)\[\033[01m\]")\[\033[00;34m\]\w\[\033[00m\] >'
=> 03:13:37 ツ mycomputer:(master)~/code/foo >_

# Kim's root prompt (the same as above without git and the hostname is red)
export PS1='\[\033[01;30m\]\t `if [ $? = 0 ]; then echo "\[\033[01;32m\]ツ"; else echo "\[\033[01;31m\]✗"; fi` \[\033[00;31m\]\h\[\033[00;37m\]:\[\033[00;34m\]\w\[\033[00m\] >'
=> 03:13:37 ツ mycomputer:~/code/foo >_

# Martin's prompt
export PS1='`if [ $? = 0 ]; then echo "\[\033[01;32m\]✔"; else echo "\[\033[01;31m\]✘"; fi` \[\033[01;30m\]\h\[\033[01;34m\] \w\[\033[35m\]$(__git_ps1 " %s") \[\033[01;31m\]\n>\[\033[00m\] '
=> ✔ mycomputer ~/code/foo master 
   > _

# Henning's danger prompt for root 2.1
export PS1='${debian_chroot:+($debian_chroot)}\[\033[43;30m\]\u@\h\[\033[00m\] \[\033[01;33m\]\w\[\033[00m\] \[\033[01;31m\]>\[\033[00m\] '
=> user@mycomputer ~/code/foo > _

# Klaus' modular prompt with git stash indicator
git_stash_size() {
  n=$( (git stash list 2> /dev/null || :) | wc -l )
  if [ $n -gt 0 ]; then
    echo -n " $n☰ "


status='`if [ $? = 0 ]; then echo "\[\033[01;32m\]✔"; else echo "\[\033[01;31m\]✗"; fi`'"$normal"
user_and_host="$blue"'`if [ $(whoami)="klaus" ]; then echo "k"; else echo "\u"; fi`@`if [ $(hostname)="Wheatley" ]; then echo "w"; else echo "\h"; fi`'"$normal"
branch="$red"'$(__git_ps1 "(%s)\[\033[01m\]")'"$normal"

export PS1="$status $user_and_host:$branch$directory$stash \$ "

# Niklas Hasselmeyer's warning if the ruby version has been changed via `rbenv shell`
if [ $RBENV_VERSION ]; then echo -n "\[\e[31m\][Ruby $RBENV_VERSION] \[\e[00m\]"; fi

See the attached screenshot for colorful examples of the above prompt settings (the user is arne on machine happycat in directory ~/code/geordi on the master branch).

Bash prompt examples.
Bash prompt with git stash indicator

refer: https://makandracards.com/makandra/1090-customize-your-bash-prompt

colour code

# Foreground colors
90   Dark gray  
91   Light red  
92   Light green    
93   Light yellow   
94   Light blue 
95   Light magenta  
96   Light cyan  

# Background colors
100  Dark gray  
101  Light red  
102  Light green    
103  Light yellow   
104  Light blue 
105  Light magenta  
106  Light cyan 

txtblk='\e[0;30m' # Black - Regular
txtred='\e[0;31m' # Red
txtgrn='\e[0;32m' # Green
txtylw='\e[0;33m' # Yellow
txtblu='\e[0;34m' # Blue
txtpur='\e[0;35m' # Purple
txtcyn='\e[0;36m' # Cyan
txtwht='\e[0;37m' # White
bldblk='\e[1;30m' # Black - Bold
bldred='\e[1;31m' # Red
bldgrn='\e[1;32m' # Green
bldylw='\e[1;33m' # Yellow
bldblu='\e[1;34m' # Blue
bldpur='\e[1;35m' # Purple
bldcyn='\e[1;36m' # Cyan
bldwht='\e[1;37m' # White
unkblk='\e[4;30m' # Black - Underline
undred='\e[4;31m' # Red
undgrn='\e[4;32m' # Green
undylw='\e[4;33m' # Yellow
undblu='\e[4;34m' # Blue
undpur='\e[4;35m' # Purple
undcyn='\e[4;36m' # Cyan
undwht='\e[4;37m' # White
bakblk='\e[40m'   # Black - Background
bakred='\e[41m'   # Red
bakgrn='\e[42m'   # Green
bakylw='\e[43m'   # Yellow
bakblu='\e[44m'   # Blue
bakpur='\e[45m'   # Purple
bakcyn='\e[46m'   # Cyan
bakwht='\e[47m'   # White
txtrst='\e[0m'    # Text Reset

How to Turn Auto Suggest On or Off in Run and Windows Explorer

This shows you the steps on Windows 11 machine

In regedit, navigate to the location below. (see screenshot below)

create a string and type “no” to disable it, or “yes” to enable it

refer: https://www.sevenforums.com/tutorials/130778-windows-explorer-auto-suggest-turn-off.html