Daniil Sliusar danyanya

Aerohive

System: Debian/Ubuntu/Fedora. Might work for others as well.

As mentioned here, to update a go version you will first need to uninstall the original version.

To uninstall, delete the /usr/local/go directory by:

Picking the right architecture = Picking the right battles + Managing trade-offs

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

\

	#!/bin/ash
	#
	# angry_wifi.sh
	#
	# auto disconnects clients with a low signal strength on LEDE / OpenWRT. great
	# for clients who hold onto a lower-signal-strength accesspoint instead of
	# roaming. before running, make sure to download the latest MAC addresses with:
	#
	# wget --no-check-certificate -O - 'https://services13.ieee.org/RST/standards-ra-web/rest/assignments/download/?registry=MAC&text=apple' \| cut -d, -f2 > apple_mac_addresses
	#

	#!/bin/bash

	mkdir -p out

	for img in `grep image $1\| sed -e 's/^.*image\: //g'`;
	do
	cleanname=${img/\//-}
	tag=`docker images \| grep $img \| awk '{print $2}'`
	echo "Exporting image: $img, tag:$tag ($cleanname)..."
	docker save $img -o out/$cleanname.tar

	# One line JS code to check MongoDB collection storageSize

	var collectionNames = db.getCollectionNames(), stats = []; collectionNames.forEach(function (n) { stats.push(db.getCollection(n).stats()); }); stats = stats.sort(function(a, b) { return b['storageSize'] - a['storageSize']; }); for (var c in stats) { print(stats[c]['ns'] + ": " + stats[c]['size'] + " (" + stats[c]['storageSize'] + ")"); }