So I've found a way to read from stdin in python, which is as follows:
if not sys.stdin.isatty():
stdin = sys.stdin.read()
but for a statement like this,
echo Hello | program.py
I only get stdin = Hello, which is how it should work. My question is, is there a way to get the whole command as a string in the python program, for example, getting "echo Hello" in the previous exmaple?
Any alternative to get the command in program.py will work too. Thanks :)
Haven't got a good idea yet, so have not tried anything as of yet.
No, you can not. You could think of launching a program as creating a box with 2 tubes, stdin and stdout (and stderr but nvm).
With echo Hello | program.py your creating 2 boxes, one for echo and one for python, then with | you pipe echo's stdout to python's stdin.
You could launch python first, then execute echo Hello, however you would need to modify your python script first to wait for inputs on stdin, then to pass the inputs to a shell subprocess's stdin, read that subprocess stdout and return that to you through it's own stdout.