Let shells in each pane of each tab of each window of iTerm2 to start in a pre-configured cwd and execute commands

.icrt.yaml

w0t0p2:
  dir: "~"
  commands:
  - pry 
w0t1p0:
  dir: "~/a/"
w0t1p1:
  dir: "~/a/"
w0t1p2:
  dir: "~/b/"
w0t1p3:
  dir: "~/c/"
w0t2p0:
  dir: "~/c"
w0t2p1:
  dir: "~/d"
w0t2p4:
  dir: "~/tmp"
w0t5p2:
  dir: "~/cascode/clojure/"

.zshrc

if [ -n "$ITERM_SESSION_ID"  ]
then
  eval "$(icrt.rb "$ITERM_SESSION_ID")"
fi

icrt.rb

#!/usr/bin/env ruby

require 'yaml'

if (config = YAML.load(IO.read(File.expand_path("~/.icrt.yaml")))[ARGV.first]) != nil
  puts (["cd #{config["dir"]}"] + (config["commands"] || [])) * "\n"
end