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extern crate rustc_version;
use rustc_version::{version_meta, Channel}

fn main() {
    // Set cfg flags depending on release channel
    match version_meta().unwrap().channel {
        Channel::Stable => {
            println!("cargo:rustc-cfg=rustc-stable");
        }
        Channel::Beta => {

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# Export GPG key to `key.asc` file and then import
gpg --import key.asc
# or add --pinentry-mode if there is ap problem with entering the password
# gpg --import --pinentry-mode loopback key.asc

git config --global commit.gpgsign true  
git config --global user.signingkey E25C1E01F3A98447  
git config --global gpg.program /usr/bin/gpg  
git config --global user.email [email protected]  

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i3 Window Manager Cheat Sheet

$mod refers to the modifier key (alt by default)

General

• startx i3 start i3 from command line
• $mod+<Enter> open a terminal
• $mod+d open dmenu (text based program launcher)
• $mod+r resize mode ( or to leave resize mode)
• $mod+shift+e exit i3

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#!bash.exe
export SSH_AUTH_SOCK=/tmp/.ssh-socket
echo ;
echo Starting connection with ssh-agent...
ssh-add -l 2>&1 >/dev/null
if [ $? = 2 ]; then
  rm -f /tmp/.ssh-script /tmp/.ssh-agent-pid /tmp/.ssh-socket
  # Exit status 2 means couldn't connect to ssh-agent; start one now
  echo Creating new ssh-agent...
  ssh-agent -a $SSH_AUTH_SOCK > /tmp/.ssh-script

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{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build",
            "type": "shell",
            "command": "cargo build",
            "group": {

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Use TouchID for sudo

sudo vi /etc/pam.d/sudo

# add first line:
auth       sufficient     pam_tid.so

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function x(name) {
    console.log(">x: ", name);
    return new Promise(function (resolve, reject) {
        setTimeout(() => {
            console.log("<x: ", name);
            resolve(name);
        }, 5000);
    });
}

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// grep - Search stdin or some files for lines matching a given string.

use std::error::Error;
use std::io::{self, BufReader};
use std::io::prelude::*;
use std::fs::File;
use std::path::PathBuf;

fn grep<R>(target: &str, reader: R) -> io::Result<()>
    where R: BufRead

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#!/bin/bash

# This assumes that the ~6GB mojave installer is in the /Applications folder.
# If it's not, just open the App Store, search Mojave, and you can download the installer file from there.

hdiutil create -o /tmp/mojave.cdr -size 6g -layout SPUD -fs HFS+J
hdiutil attach /tmp/mojave.cdr.dmg -noverify -mountpoint /Volumes/install_mojave
sudo /Applications/Install\ macOS\ mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/install_mojave
mv /tmp/mojave.cdr.dmg ~/Desktop/InstallSystem.dmg
hdiutil detach /Volumes/Install\ macOS\ mojave

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Setting up Windows 10 and WSL

This document describes how to set up Windows 10 for cross-platform development (Go, NodeJS, etc) with Windows Subsystem for Linux (WSL).

Resources

Most of the information here is collected from

• http://wslcorsair.blogspot.com/
• https://brianketelsen.com/