Split the Current iTerm2 Session to Run a Command

iterm

#!/usr/bin/osascript

on run argv
  tell application "iTerm2"
      tell current session of current window
          set view to split horizontally with default profile command "sh -c " & (quoted form of item 1 of argv)
          select view
      end tell
  end tell
end run

I have seen variations of this script elsewhere involving writing to the session, which can result in various forms of derp. It's easier to just provide the command to iTerm2 when you create the new view. I use this for things like iterm ~/bin/fzf-notes, which uses fzf to launch an editor.