Math

QuestionGiven the command output for `ps -ef | grep user1`, which statements are TRUE?
1. Processes with pid=1 and pid=1909 have been terminated.
2. Process with pid=1909 has two children processes belonging to user1.
3. Processes with pid=1909 and pid=1910 have been previously terminated.
4. Process with pid =1=1 was initiated by user1.
5. None of the mentioned.
6. Process with pid=1909 has two parent processes.

Studdy Solution

STEP 1

Assumptions1. The output of the command is accurate and up-to-date. . The UID column represents the user who owns the process.
3. The PID column represents the process ID of the process.
4. The PPID column represents the parent process ID of the process.
5. A process is terminated if it does not appear in the output.
6. A process is considered a child of another process if its PPID matches the PID of the other process.

STEP 2

Let's analyze the first statement "Processes with pid=1 and pid=1909 have been terminated at the time the command was run".From the output, we can see that the process with pid=1909 is listed, which means it has not been terminated. The process with pid=1 is not listed, but we cannot conclude that it has been terminated because it could be owned by a different user. Therefore, this statement is false.

STEP 3

Now let's analyze the second statement "Process with pid=1909 has two children processes belong to user1".From the output, we can see that the processes with pid=1910 and pid=1915 both have the PPID of1909, which means they are children of the process with pid=1909. Therefore, this statement is true.

STEP 4

Let's analyze the third statement "Processes with pid=1909 and pid=1910 have been previously terminated".
From the output, we can see that both processes with pid=1909 and pid=1910 are listed, which means they have not been terminated. Therefore, this statement is false.

STEP 5

Now let's analyze the fourth statement "Process with pid=1 was initiated by user1".
From the output, we can see that the process with pid=1 is not listed. Therefore, we cannot conclude anything about this process. This statement is not verifiable with the given information.

STEP 6

Let's analyze the fifth statement "None of the mentioned".
This statement is false because the second statement is true.

STEP 7

Finally, let's analyze the last statement "Process with pid=1909 has two parent processes".
From the output, we can see that the process with pid=1909 has only one parent process with pid=1. Therefore, this statement is false.
In conclusion, the only true statement is "Process with pid=1909 has two children processes belong to user1".

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