Kirill Babikhin qsimpleq

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

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.

Add on top of default.nix: with import {}; or simply run as nix-build '' (i. e. for nix-build complaining) or rather nix-build -E 'with import {}; callPackage ./default.nix {}' (or even import)

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	ru:
	date:
	formats:
	# Форматы указываются в виде, поддерживаемом strftime.
	# По умолчанию используется default.
	# Можно добавлять собственные форматы
	#
	#
	# Use the strftime parameters for formats.
	# When no format has been given, it uses default.

	# Install arch linux in an encrypted btrfs partition with GPT and UEFI support, gummiboot and hibernate/resume support
	# sources:
	# http://hole.tuziwo.info/install-arch-linux-on-uefi-gpt-computer-with-btrfs-support.html
	# http://www.brunoparmentier.be/blog/how-to-install-arch-linux-on-an-encrypted-btrfs-partition.html
	# https://wiki.archlinux.org/index.php/Dm-crypt/Swap_encryption

	# Take note of this:
	# - The first thing you need is to identify which disk you're going to use. For the purpose of this guide, it will be /dev/sda
	# Be VERY CAREFUL if you have more than one disk on your computer, and DOUBLE CAREFUL if one of them is the one with your backups
	# - Since btrfs does not support swapfiles (yet), we'll create a swap partition. In this guide, it will NOT be encrypted

	# kudos to dzaku at consolechars.wordpress.com

	### MOUNT qcow2 image with lvm partitions

	# ensure nbd can handle that many partitions
	sudo modprobe nbd max_part=8

	# present image as block device through NBD
	sudo qemu-nbd --connect=/dev/nbd0 <image.qcow2>