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The maximum niceness value that a regular user can assign to a process with the 'nice' command when executing a new process is '19'. Option B is the correct answer.
The 'nice' command is used to set the niceness of a process, which determines the priority at which the process will run. A higher niceness value means that the process will have a lower priority and will run less frequently.
By default, a regular user can only set the niceness value to a maximum of '19'. This means that the process will have a lower priority and will run less frequently than processes with a lower niceness value.
To set the niceness value of a process to the maximum value of '19', you can use the following command:
nice -n 19 command
This command will execute the 'command' with a niceness value of '19', giving it a lower priority and causing it to run less frequently.
The other options do not accurately describe the maximum niceness value that a regular user can assign to a process:
Option A: The maximum niceness value is '19', not '9'.
Option C: The maximum niceness value is '19', not '49'.
Option D: The maximum niceness value is '19', not '99'.
Note: A superuser (root) can set the niceness value to any value, including values lower than '19'. This will give the process a higher priority and cause it to run more frequently.
To clarify...
0 is the value of left alone. Neutral.
Using the nice command without specified value sets value to 10.
Default is a tricky term here. Original value and default value may be better terms.
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