mec

Add Yubkikey GPG to a machine

• My yubikey GPG key is on Keybase.io so this imports it locally:

curl https://keybase.io/mecrawlings/key.asc | gpg --import

• Once I have the key locally I need to trust it:

gpg --edit-key <keyid>

mec

sudo ln -s /usr/lib/libSystem.B.dylib /usr/local/lib/libgcc_s.10.4.dylib

mec

• Install from Homebrew
• start pg_ctl -D /usr/local/var/postgres start && brew services start postgresql
• connect as 'postgres' psql postgres
• add 'postgres' user createuser -s postgres
• confirm user psql postgres - check 'postgres' user is listed

mec

Save and open the page:

Capybara.save_and_open_page

mec

tmux

ctrl-b > arrows move pane

ctrl-b > [ scrolling mode q exits

ctrl-b > " split horizontal

ctrl-b > % split vertical

mec

require 'benchmark'

def print_memory_usage
  memory_before = `ps -o rss= -p #{Process.pid}`.to_i
  yield
  memory_after = `ps -o rss= -p #{Process.pid}`.to_i

  puts "Memory: #{((memory_after - memory_before) / 1024.0).round(2)} MB"
end

mec

sudo ln -s /usr/lib/libSystem.B.dylib /usr/local/lib/libgcc_s.10.4.dylib

mec

Keybase proof

I hereby claim:

• I am mec on github.
• I am mecrawlings (https://keybase.io/mecrawlings) on keybase.
• I have a public key ASAPrWiDB-nPZY_WQpFRt-abXkm6vRJFG-WHtwlH_1tZ8wo

To claim this, I am signing this object:

mec

// Private
let two = 2

// fucntion 
function sum(x, y) {
	return x + y
}

// arrow, has to be assigned
const multiply = (x,y) => x * y

mec

npm tips

Update npm

sudo npm update npm -g

List all global packages and versions, show only one level

npm ls -g --depth 0