Execute Linux command and kill the parent terminal without killing the process

This can be achieved using the command nohup

Shell
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nohup <command> <args> ><filename> 2>&1 &
 
e.g.
nohup /usr/bin/terminator -m -T 'main_terminal' -l My_Layout > /dev/null 2>&1 &

Source: http://stackoverflow.com/questions/13676457/how-can-i-put-the-current-running-linux-process-in-background