Zhiguang Wang zhiguangwang

## install-salt-minion.sh
#!/bin/bash

set -e

SALT_VERSION='3002'

if [ -z "$1" ]; then
    echo 'Please run this script with argument <salt-master address>'
    exit 1
fi

## README.md

      
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                zhiguangwang
                / README.md
            
            
              Created
              August 26, 2018 08:24
            
              
                Remove / Uninstall packages marked ‘rc’ on Debian / Ubuntu.
              
          
    Remove / Uninstall packages marked ‘rc’ on Debian / Ubuntu.

While checking the status of packages using dpkg, it is possible to see a ‘rc’ state for some unused packages, this corresponds to:

r: the package was marked for removal
c: the configuration files are currently present in the system

In other words: the package is not completely removed (config files are still present), but not installed anymore (and obviously not used).
To see a list of packages marked as ‘rc’:

  
## README.md

      
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                zhiguangwang
                / README.md
            
            
              Created
              December 28, 2017 11:53
            
              
                Remove password requirement from group sudo when using command "sudo"
              
          
    Ubuntu

echo "%sudo ALL=(ALL:ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/50-group-sudo-nopasswd


## optional.cpp
#include <iostream>
#include <string>
#include <optional>

int main()
{
    std::cout << "sizeof bool is " << sizeof(bool) << '\n';
    std::cout << "sizeof std::optional<bool> is " << sizeof(std::optional<bool>) << "\n\n";

    std::cout << "sizeof short is " << sizeof(short) << '\n';

## README.md

      
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                zhiguangwang
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              March 21, 2019 17:53
            
              
                Performance cost of passing std::function as parameter.
              
          
    Environment


Intel i7-4790 @ 3.60GHz
Ubuntu 14.04.5 LTS (Windows Subsystem Linux)
GCC 6.2.0
Clang 3.9.1
CXXFLAGS -std=c++14 -O2

Output


## README.md

      
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                zhiguangwang
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              January 17, 2024 14:43
            
              
                Rename top-level folder while creating a tar.gz file.
              
          
    tar czfv NEW_NAME.tar.gz OLD_NAME --transform s/OLD_NAME/NEW_NAME/

Note: this only works with GNU Tar.
Example

we want to tar /opt/zlib/1.2.11 into zlib-1.2.11.tar.gz, and we want the top-level folder inside that tar.gz file to be zlib-1.2.11, not 1.2.11:

  
## shadowsocks-docker-ubuntu.md

      
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                zhiguangwang
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              Last active
              July 13, 2019 06:32
            
              
                Install and run Shadowsocks Docker container in Ubuntu Server 16.04
              
          
    Install and run Shadowsocks Docker container in Ubuntu Server 16.04

# Configurations for shadowsocks
export SSPORT=[your shadowsocks port]
export SSPASSWORD=[your shadowsocks password]

# Install docker prerequisites
sudo apt update
sudo apt install apt-transport-https ca-certificates

  
## git-repo-init.sh
git lfs clone --recursive [repo].git
git submodule foreach git lfs pull

## bashrc.bat
@echo off

set HOME=%HOMEDRIVE%%HOMEPATH%

@rem Utilites
set PATH=%PATH%;C:\Program Files\WinRAR
set PATH=%PATH%;C:\Program Files (x86)\Microsoft VS Code\bin
set PATH=%PATH%;%HOME%\apps\cmake\3.6.0-win64-x64\bin
set PATH=%PATH%;%HOME%\apps\bin

## ec2-ping-test.sh
#!/bin/bash
#
# Usage:
#
#   1. Set SECURITY_GROUP and KEY_NAME to your value
#   2. source ec2-ping-test.sh
#   3. launch_all_instances
#   4. terminate_all_instances
#
	#!/bin/bash

	set -e

	SALT_VERSION='3002'

	if [ -z "$1" ]; then
	echo 'Please run this script with argument <salt-master address>'
	exit 1
	fi
	#include <iostream>
	#include <string>
	#include <optional>

	int main()
	{
	std::cout << "sizeof bool is " << sizeof(bool) << '\n';
	std::cout << "sizeof std::optional<bool> is " << sizeof(std::optional<bool>) << "\n\n";

	std::cout << "sizeof short is " << sizeof(short) << '\n';
	git lfs clone --recursive [repo].git
	git submodule foreach git lfs pull
	@echo off

	set HOME=%HOMEDRIVE%%HOMEPATH%

	@rem Utilites
	set PATH=%PATH%;C:\Program Files\WinRAR
	set PATH=%PATH%;C:\Program Files (x86)\Microsoft VS Code\bin
	set PATH=%PATH%;%HOME%\apps\cmake\3.6.0-win64-x64\bin
	set PATH=%PATH%;%HOME%\apps\bin
	#!/bin/bash
	#
	# Usage:
	#
	# 1. Set SECURITY_GROUP and KEY_NAME to your value
	# 2. source ec2-ping-test.sh
	# 3. launch_all_instances
	# 4. terminate_all_instances
	#