Linux: Init Process in the Background and Detach

# Define program
program=remmina

# Method 1
nohup $program &

# Method 2
$program &
disown -h %1 # assuming jobs return [1] as the id

# Method 3
$program </dev/null &>/dev/null &

# Checking
kim@kimlinux:~$ jobs
[1]-  Running                 remmina &
[2]+  Done                    $program < /dev/null &> /dev/null

# Stop program abruptly
pkill $program