B.D. Smith bds

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Palo Alto, CA
www.bds.dev

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bds / gist:2405926

Created April 17, 2012 13:18

Convert .iso to bootable USB on OSX

	# Remove all partitions, erase, format with FAT with 'Disk Utility' BEFORE commands below

	# Unmount flash drive, still shown in 'diskutil list`
	diskutil unmountdisk /dev/disk2

	# Write .iso to flash drive
	sudo dd if=/path/to/your/distro.iso of=/dev/disk2 bs=1m

	# Eject disk
	diskutil eject /dev/disk2

bds / gist:2422119

Created April 19, 2012 16:25

Push to Github, Heroku and notify NewRelic of deployment

git push origin master && git push heroku master && newrelic deployments

bds / gist:2892707

Created June 8, 2012 00:46

Unix find, move and rename a downloaded file with a space in the filename

find ~/Downloads -name '*(2).yml' -exec cp {} ~/project-foo/config/newrelic.yml \;

bds / gist:2933211

Created June 14, 2012 21:54

Ruby copy string to OSX clipboard

IO.popen('pbcopy', 'r+') { |clipboard| clipboard.puts markdown.to_html }

bds / gist:3210386

Created July 30, 2012 21:22

Encrypt and decrypt files with openssl

	# http://osxdaily.com/2012/01/30/encrypt-and-decrypt-files-with-openssl/

	# Encrypt
	openssl des3 -in file.txt -out encrypted.txt

	# Decrypt
	openssl des3 -d -in encrypted.txt -out normal.txt

bds / gist:3660246

Created September 6, 2012 20:45

Verify CSV has a uniform number of fields

awk -F ',' '{print NF}' foo.csv | uniq -c

bds / gist:3733733

Created September 16, 2012 18:49

Ignore EOL characters in a git diff

git diff HEAD --ignore-space-at-eol

bds / gist:4192180

Created December 3, 2012 02:11

Subset an R dataframe by a list of dates

subset(df, sprint.end.date %in% as.Date(c("2012-11-16", "2012-11-30")))

bds / gist:6556881

Created September 13, 2013 22:27

Get google.com every 60 seconds for 100 minutes. Helped me keep network connection "alive". Sure there is a better way to do this (curl and bash would be simpler, including only requesting HEAD)

while max <= 100 do; puts Net::HTTP.get('www.google.com', '/'); max +=1; sleep 60; end

bds / gist:6576210

Created September 16, 2013 02:43

Minitest Cheat Sheet

	# Credit - http://mattsears.com/articles/2011/12/10/minitest-quick-reference
	#
	# must_be list.size.must_be :==, 0
	# must_be_close_to subject.size.must_be_close_to 1,1
	# must_be_empty list.must_be_empty
	# must_be_instance_of list.must_be_instance_of Array
	# must_be_kind_of list.must_be_kind_of Enumerable
	# must_be_nil list.first.must_be_nil

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