How can I run a command at the background in Bash without ampersand (&) at the end of a command?
Update:
I want to do it so I can do while inotifywait -e modify app.py; do killall -9 python; python app.py &; done, but that isn't possible because of the syntax.
Use coproc python app.py
From man bash
Coprocesses
A coprocess is a shell command preceded by the coproc reserved word. A coprocess is executed asynchronously in a subshell, as if the command had been terminated with the & control operator, with a two-way pipe estab‐ lished between the executing shell and the coprocess.
The format for a coprocess is:
coproc [NAME] command [redirections]
Your syntax is slightly off:
while inotifywait -e modify app.py; do killall -9 python; python app.py &; done
It should be:
while inotifywait -e modify app.py; do killall -9 python; python app.py & done
Unlike C-like languages, you cannot have an empty statement before ; or &.
