👉 The EXEC fluid, also known as the "system call" or "exec fluid," is a critical component of an operating system responsible for executing program instructions by replacing the current process's memory with a new program's memory space. When a process makes an "exec" system call, the operating system uses this fluid to load the new program's code and data into memory, then maps the necessary memory regions for the process to execute. This process involves allocating memory, setting up the program's stack and registers, and transferring control to the new process's executable code. The fluid ensures that each process runs in its isolated memory space, preventing interference between processes and maintaining system stability and security.
