The open command isn't part of bash - I think it's an OSX thing (maybe
BSD?). The question isn't even really about open - it's about how Sublime
and TextEdit handle files vs BBEdit.
I was able to verify your results, and am led to believe that TextEdit
(and apparently sublime, I don't have it) doesn't hold the file open while
you're editing. I wrote a quick little ruby script ( since it's such a
lovely easy language ) to open a file and hold it open for 10
File.open "open.txt", "r" do |f|
and I noticed it showed up in lsof:
$ lsof open.txt
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
ruby 6531 dfarrell 5r REG 1,4 14 7602637 open.txt
You may want to consider using
opensnoop to watch the file
opens as they happen on the file in question. I found best results running
sudo opensnoop | grep TextEdit.*open.txt. As we know, it
does open the file, it apparently reads it into a buffer and then
closes the file descriptor again when it's done reading/writing. FYI,
vim seems to do the same thing.
Hope it helps!