What does a successful call to execve() do to the calling process?
Correct answer C. Replaces the process's program image with a new program while keeping the same process ID
Explanation
execve() loads a new program into the current process, overwriting its text, data, heap and stack, while the PID stays the same. Because the old program is gone, a successful execve() never returns. Creating a child is fork()'s job, and waiting is done with wait(). The usual UNIX pattern is fork() followed by exec in the child.
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