总结自 http://askubuntu.com/questions/562911/how-to-execute-a-task-in-background
1. 启动时 $ zathura a.pdf &
2.
$ zathura a.pdf
$ # press Ctrl+z
$ bg
3. nohup zathura a.pdf &
4.
$ zathura a.pdf
$ # press Ctrl+z
$ bg
$ disown %%
原文:http://www.cnblogs.com/jjtx/p/5056094.html