On Friday, 8 April 2016 at 10:08:07 UTC, Puming wrote:
but with each command loop, the program is stopped (equal to
Ctrl-Z).
Your program is stopped, right?
Odds are it is that there's terminal output for the background
process, which sends your program a signal which, by default,
stops it.
From man 7 stop:
SIGSTOP 17,19,23 Stop Stop process
SIGTSTP 18,20,24 Stop Stop typed at terminal
SIGTTIN 21,21,26 Stop Terminal input for
background process
SIGTTOU 22,22,27 Stop Terminal output for
background process
I'd say try catching one of those signals and confirm if it is
one of them and then figure out what to do next. Maybe ignoring
the signal is what you want to do.
