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Log in to the GNOME desktop on your Fedora 20 system as user1 and open a commandline terminal. At a shell prompt, type xeyes to execute the xeyes program. Does the terminal window stay open? Click the terminal window to bring it to the foreground. Do you see your shell prompt? Why? Close your terminal window by clicking the X symbol in the upper-right corner. What happened to the xeyes program? Why? Next, open another command-line terminal and type xeyes& at the command prompt to execute the xeyes program in the background. Click the terminal window to bring it to the foreground. Do you see your shell prompt? Why? Close your terminal window by clicking the X symbol in the upper-right corner. What happened to the xeyes program? Why? Finally, open another command-line terminal and type nohup xeyes& at the command prompt to execute the xeyes program in the background from the nohup command. Click the terminal window to bring it to the foreground and press Enter. Do you see your shell prompt? Why? Close your terminal window by clicking the X symbol in the upper-right corner. Notice that the xeyes program is still available. Research the nohup manual page and explain why.