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Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

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Docker Swarm 101

create few machines first...

docker-machine create --driver virtualbox mgr1
docker-machine create --driver virtualbox wrk1
docker-machine create --driver virtualbox wrk2
docker-machine create --driver virtualbox wrk3

setup of swarm hosts.

setup manager node.

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Requirements

• no upfront installation/agents on remote/slave machines - ssh should be enough
• application components should use third-party software, e.g. HDFS, Spark's cluster, deployed separately
• configuration templating
• environment requires/asserts, i.e. we need a JVM in a given version before doing deployment
• deployment process run from Jenkins

Solution

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Here is a high level overview for what you need to do to get most of an Android environment setup and maintained.

Prerequisites (for Homebrew at a minimum, lots of other tools need these too):

• XCode is installed (via the App Store)
• XCode command line tools are installed (xcode-select --install will prompt up a dialog)
• Java

Install Homebrew:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

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# Nginx Reverse Proxy for NodeJS Apps
server
	{
		listen       80;
		server_name wechat.io;
		index index.html index.htm index.php default.html default.htm default.php;
		root  /home/wwwroot/wechat.io;

		include none.conf;
		if ($http_host != "wechat.io") {

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rdr pass on en0 inet proto tcp to any port 80 -> 127.0.0.1 port 8080
rdr pass on en0 inet proto tcp to any port 443 -> 127.0.0.1 port 8080

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scrub-anchor "com.apple/*"
nat-anchor "com.apple/*"
rdr-anchor "com.apple/*"
rdr-anchor "forwarding"
dummynet-anchor "com.apple/*"
anchor "com.apple/*"
load anchor "com.apple" from "/etc/pf.anchors/com.apple"
load anchor "forwarding" from "/etc/pf.anchors/mitm"

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var ErrorLog = common.mongoose.model('ErrorLog', schema);

// differences of line 4 vs 5?
exports = module.exports = ErrorLog;
exports.ErrorLog = ErrorLog;

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Responsive Flat UI Kit

A custom UI set built to work with and sit next to Bootstrap 3. Custom select boxes by @catalinred. 3D Scroll effects inspired by @chriscoyier's slide in when scroll down pen. The kit is also responsive!

Try clicking & hovering everything.

Feel free to fork, heart and share!

A Pen by Matt Litherland on CodePen.

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openssl pkcs12 -passin pass:"somepass" -in "mycert.p12" -clcerts -nokeys -out certificate.pem
openssl pkcs12 -passin pass:"somepass" -in "mycert.p12" -nocerts -out key.pem -passout pass:"somepass"
openssl smime -binary -sign -certfile WWDR.pem -signer certificate.pem -inkey key.pem -in manifest.json -out signature -outform DER -passin pass:"somepass"