estion: What is the purpose of the "fork" system call in Unix-like operating systems?A) To create a new processB) To terminate a processC) To wait f
Question
Question:
What is the purpose of the fork
system call in Unix-like operating systems?
A) To create a new process
B) To terminate a process
C) To wait for a process to complete
Solution
Understanding the "fork" System Call
The "fork" system call in Unix-like operating systems is a critical component of process management. Its primary function is to create a new process, which is essentially a copy of the existing process.
-
Create a New Process: When a process calls
fork()
, it generates a new process known as the child process. The child process is an almost exact duplicate of the parent process, inheriting its memory, file descriptors, and program counter. -
Process Identification: After the
fork()
call, the operating system differentiates between the parent and child processes. Thefork()
function returns a value of zero to the child process and the child's process ID (PID) to the parent process. -
Independent Execution: Once created, both processes can execute independently. They can follow different execution paths based on their programming logic.
-
Hierarchical Process Structure: The use of
fork()
allows for the creation of a hierarchical structure of processes, enabling multitasking in Unix-like systems.
Conclusion
In summary, the purpose of the "fork" system call in Unix-like operating systems is primarily A) To create a new process.
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