Ignore hang ups when starting a process

Start a process, exit the current shell, process continues.

$ nohup rake qc:work &

nohup enables your program to ignore the HUP signal a controlling process sends.

Example

$ nohup cat &                                                                                                              
> [1] 2766
> appending output to nohup.out
$ kill -1 2766
$ ps -A | grep 2766
> 2766 ttys003    0:00.00 cat

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