What is the primary purpose of the 'nohup' command in Linux?

The 'nohup' command in Linux is primarily used to run a command that ignores SIGHUP (hangup) signals. This is particularly useful for running processes that need to continue executing even after the user has logged out of the session. When a command is executed with 'nohup', it ensures that the process remains active, regardless of the terminal state or if the user disconnects.

This is commonly utilized for long-running scripts or applications that may take a significant amount of time to complete. By employing 'nohup', users can securely start a job and disconnect from the terminal without worrying about interrupting the execution of that job. The output is typically redirected to a file named 'nohup.out' unless otherwise specified, making it easier to check the results after the execution is complete.

Other options may address different aspects of job control and process management in Linux, but they do not accurately capture the specific functionality of 'nohup' in terms of handling SIGHUP signals.