- open -e opens the item in TextEdit. I basically never want this, and it’s fascinating that it’s built in.
- open -t opens in your default text editor — for me it’s BBEdit; but whatever you have configured will do. Note: this is not $EDITOR but LaunchServices: a macOS-ism.
- open -F opens a “fresh” version of the app, not doing window or document restoration. Handy if it’s borked!
- open -R reveals it in the Finder instead of opening it.
- open -f reads input from stdin and opens the results in your text editor (weird but… cool, I think).
—Read the Manual: open — Chris Krycho