On Tue, 23 Sep 2025 05:07:18 +0200 (CEST), Pourko wrote: > On Thu, 18 Sep 2025 15:26:16 -0400 Chet Ramey wrote: > > There isn't a good way for a shell script to determine whether or not > > it's in the foreground or background, and whether it is in the same > > process group as the terminal. > > Attached is the patch that does it. > [...] > -s FILE True if file exists and is not empty. > -S FILE True if file is a socket. > -t FD True if FD is opened on a terminal. > + -T FD True if FD is opened on a terminal and is readable. > -u FILE True if the file is set-user-id. > -w FILE True if the file is writable by you. > -x FILE True if the file is executable by you. > [...] > > Now... > [ -t 0 ] && [ ! -T 0 ] > ...means we are running in the background.
It puzzles me that I seem to be the only one excited by this. Don't you find it to be a useful thing to have?
