New session (tab) in iTerm with(or without) command and name.

iterm-new-session

#!/usr/bin/env ruby
# Usage: iterm-new-session [-n NAME] [command]
# command should be quoted (e.g. iterm-new-session 'ls -l')

require "optparse"
require "open3"
require "json"
require "shellwords"
require "tmpdir"

def osascript(source, arg = {})
  out, err, status = Open3.capture3("/usr/bin/osascript", "-l", "JavaScript", "-e", source, arg.to_json)
  unless status.success?
    $stderr.puts "osascript exited with #{status.to_i}"
    $stderr.puts err
    exit status.to_i
  end
  out
end

name = nil
OptionParser.new do |o|
  o.on("-n NAME", "--name NAME"){|s| name = s }
  o.order!(ARGV)
end

command = ARGV.first || ENV["SHELL"]
name ||= command.shellsplit.first.split("/").last
command = "cd #{Dir.pwd.shellescape} && " + command

script_filename = Dir.mktmpdir("iterm-new-session") + "/iterm-new-session.sh"
open(script_filename, "w"){|f| f.write(command) }

script = <<-JS
function run(argv) {
  var options = JSON.parse(argv[0]);
  var iTerm = Application("iTerm");
  var terminal = iTerm.currentTerminal();
  var session = new iTerm.Session();

  terminal.sessions.push(session);
  session.exec({command: options.command});
  session.name = options.name;
}
JS

osascript(script, command: "/bin/sh #{script_filename.shellescape}", name: name)