jia3857

# Fix agent forwarding
# https://gist.github.com/martijnvermaat/8070533
# http://techblog.appnexus.com/2011/managing-ssh-sockets-in-gnu-screen/
# See .ssh/rc for socket linking
unsetenv SSH_AUTH_SOCK
setenv SSH_AUTH_SOCK $HOME/.ssh/ssh_auth_sock.$HOSTNAME

jia3857

To support my open-source work, consider adding me on Patreon.

macOS 10.14 Mojave Mostly-Automated Setup

An easy to refer to document for regularly setting up macOS 10.14 Mojave.

Controversy

The topic of recipe-based frequent fresh reinstalls of macOS is a controversial issue. Some people are against reinstalling macOS, citing that they have never had an issue with Apple provided upgrade installs.

jia3857

## Setup `dnsmasq` and configure for *.test domains

$ brew install dnsmasq
$ vim /usr/local/etc/dnsmasq.conf

## EDIT $(brew --prefix)/etc/dnsmasq.conf

# setup domain(s) responsible by dnsmasq
echo 'address=/.test/127.0.0.1' >> $(brew --prefix)/etc/dnsmasq.conf

jia3857

#!/usr/bin/env bash

# Setup ~/.dotfiles.git
git clone --bare https://github.com/jia3857/dotfiles3.git $HOME/.dotfiles.git
alias dotfiles='/usr/bin/git --git-dir=$HOME/.dotfiles.git/ --work-tree=$HOME'

# function dotfiles() {
#    /usr/bin/git --git-dir=$HOME/.dotfiles.git/ --work-tree=$HOME'
# }
# export -f dotfiles='/usr/bin/git --git-dir=$HOME/.dotfiles.git/ --work-tree=$HOME'

jia3857

struct TreeNode {
    int val;
    TreeNode *left;
    TreeNode *right;
    TreeNode *parent;
    TreeNode(int x) : val(x), left(NULL), right(NULL), parent(NULL) {}
};

int getHeight(TreeNode *node) {
    int height = 0;

jia3857

Setup Mac OS X

I've done the same process every couple years since 2013 (Mountain Lion, Mavericks, High Sierra, Catalina) and I updated the Gist each time I've done it.

I kinda regret for not using something like Boxen (or anything similar) to automate the process, but TBH I only actually needed to these steps once every couple years...

jia3857

# Installing VirtualBox on CentOS 7. 

# Install dependencies
yum -y install gcc make patch dkms qt libgomp perl
yum -y install kernel-headers-$(uname -r) kernel-devel-$(uname -r) fontforge binutils glibc-headers glibc-devel

# Install VirtualBox 6.1
cd /etc/yum.repos.d
wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo
yum install VirtualBox-6.1

jia3857

# Some notes from installing VirtualBox on CentOS 7. 
# These exact steps haven't been tested, as I ran them in a different order when manually installing.

# Install dependencies
yum -y install gcc make patch  dkms qt libgomp
yum -y install kernel-headers kernel-devel fontforge binutils glibc-headers glibc-devel

# Install VirtualBox
cd /etc/yum.repos.d
wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo

jia3857

#!/usr/bin/env python
"""
Fast duplicate file finder.
Usage: duplicates.py <folder> [<folder>...]

Based on https://stackoverflow.com/a/36113168/300783
Modified for Python3 with some small code improvements.
"""
import os
import sys

jia3857

# Write a function isvalid() to take start_state, ['_','L','R','_'], finish_state ['L','_','_','R'] strings
# so that return True if start_state can transition to finish_state

class Solution:

  def isvalid(self, start, finish):
    sStart = self.state_transition(start)
    sFinish = self.state_transition(finish)
    print " sStart = {} ==> {}".format(start, ''.join(sStart))
    print "sFinish = {} ==> {}".format(finish, ''.join(sFinish))