daemon_processes

$ ruby -e 'sleep 1 while true' &
[1] 80604

$ fg %1
[1]  + 80604 running    ruby -e 'sleep 1 while true'
^Z
[1]  + 80604 suspended  ruby -e 'sleep 1 while true'

$ ps
  PID TTY           TIME CMD
13974 ttys000    0:00.11 -zsh
14934 ttys000    0:00.35 vim .
15095 ttys001    0:00.14 -zsh
15252 ttys002    0:00.17 -zsh
15415 ttys004    0:00.26 -zsh
15669 ttys005    0:00.25 -zsh
16325 ttys007    0:00.16 -zsh
66807 ttys008    0:00.27 -/bin/zsh
80604 ttys008    0:00.05 ruby -e sleep 1 while true
70489 ttys009    0:00.22 -/bin/zsh
31625 ttys018    0:01.95 -/bin/zsh
49603 ttys018    0:00.00 bash /Users/jmeyer1/Code/8b/bin/8br bundle:install
49607 ttys018    0:08.69 rbx /Users/jmeyer1/.gem/rbx/2.1.0/bin/rake bundle:install
54630 ttys018    0:00.01 /bin/zsh -l -c source /Users/jmeyer1/Code/8b/script/ruby-env.sh ; bundle install
54632 ttys018    0:00.00 /bin/zsh -l -c source /Users/jmeyer1/Code/8b/script/ruby-env.sh ; bundle install
69451 ttys018    0:02.11 vim test.rb
28791 ttys020    0:00.21 -/bin/zsh
65266 ttys020    0:04.08 vim .

$ kill %1
[1]  + 80604 terminated  ruby -e 'sleep 1 while true'