don't work ctrl+z
hello.
i m run xmrigproxy on linux. run backround. 
run command "./xmrig-proxy &"
"&" paramter run bg. after time "fg 1" command xmrig-proxy foreground. thats ok right moment.
but i want a back to backround again.
press ctrl+z but not working this combination. becouse pause prosses and "bg" and again backround process
https://en.wikipedia.org/wiki/Job_control_(Unix)
note: i dont want -background command