Jacob Hein Jahhein

Homebrew Permissions Denied Issues Solution

`sudo chown -R $(whoami) $(brew --prefix)/*`

Github : Signing commits using GPG (Ubuntu/Mac) 🔐

Do you have an Github account ? If not create one.
Install required tools
Latest Git Client
gpg tools

# Ubuntu
sudo apt-get install gpa seahorse
# MacOS with https://brew.sh/

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

Git Cheat Sheet

Visit my blog.

Commands

Getting Started

git init

or

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

	echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
	. ~/.bashrc
	mkdir ~/local
	mkdir ~/node-latest-install
	cd ~/node-latest-install
	curl http://nodejs.org/dist/node-latest.tar.gz \| tar xz --strip-components=1
	./configure --prefix=~/local
	make install # ok, fine, this step probably takes more than 30 seconds...
	curl https://www.npmjs.org/install.sh \| sh

	Hi Devin,

	Nice to meet you.
	This is REMOVED who has 10+ years of software engineering.
	I believe we can achieve great success with your English and my freelancing experience and coding skills.

	I want to make partnerships with U.S. individuals who have some technical background since there are many big projects in US clients.
	I have significant experience in freelancing and full-stack coding skills but not good at English.

	What I want from you is to create and share your Upwork account with me.

	# shortform git commands
	alias g='git'

	# pretty tab'd git log
	git log --graph --pretty="tformat:%h(%ar)<%an>%d %s" $ \| sed -Ee 's/(^[^<]) ago\)/\1)/' \| sed -Ee 's/(^[^<]), [[:digit:]]+ .months?\)/\1)/' \| column -s '' -t \| cat

	# change author of all git repos
	git filter-branch -f --env-filter "GIT_AUTHOR_NAME='yourname'; GIT_AUTHOR_EMAIL='[email protected]'; GIT_COMMITTER_NAME='yourname'; GIT_COMMITTER_EMAIL='[email protected]';" HEAD;

	# stage only deleted files

	default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
	default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
	default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'