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While completing an assignment on Unix, I accidentally pressed Ctrl+Z and the program got terminated (suspended). Afterwards when I try to access it again, I am getting the message 'permission denied'. I tried the necessary shortcuts, but it is not working.

What am I doing wrong?

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Ctrl+Z sends the foreground process a suspend signal, pausing the job. The job can be resumed with the command fg, from the parent terminal.

If the parent terminal has been closed, the process has been killed, and can no longer be resumed.

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