Is there a way to create a Evernote note from the command line? At best I would like to be able to edit the same note later via the command line as well.
You can try out http://geeknote.me/.
Geeknote is a command line tool for manipulating evernote. You can creating notes, list notebook, search notebooks etc.
I also has a feature to sync files a directory of text files with evernote.
You can also use the Evernote Scripting command (ENScript). I have the following in a batch file for adding a short note:
echo %* | c:\PROGRA~2\EVERNOTE\EVERNOTE\ENSCRIPT.EXE createNote /i %1 /t SHORTNOTE
This will create a note with the first parameter being the title, and the title and the remaining parameters go into the note.