You have an online video library. You want to upload a directory of movies. Since this process will take several hours, you want to ensure that the process continues even after the terminal is shut…

Question

Options

• AUse the bg command to run the process at the background.
• BAdd the nohup command in front of the process.
• CAdd the nohup command at the end of the process.
• DRun the process inside a GNU Screen-style screen multiplexer.

• A
  15% (5)
• B
  79% (26)
• C
  6% (2)

Explanation

Whenever the nohup command is added in front of any command or process, it makes the command or process run even after the terminal is shut down or session is closed. All processes, except the 'at' and batch requests, are killed when a user logs out. If a user wants a background process to continue running even after he logs out, he must use the nohup command to submit that background command. To nohup running processes, press ctrl+z, enter "bg" and enter "disown". The other way to accomplish the task is to run the command/process inside a GNU Screen-style screen multiplexer, and then detach the screen. GNU Screen maintains the illusion that the user is always logged in, and allows the user to reattach at any time. This has the advantage of being able to continue to interact with the program once reattached (which is impossible with nohup alone). Answer: C is incorrect. The nohup command works when it is added in front of a command. Answer: A is incorrect. The bg command cannot run the command or process after the terminal is shut down or session is closed.

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