OS System Calls Emulator

System Calls

open()

Open a file and return a file descriptor

read()

Read data from a file descriptor

write()

Write data to a file descriptor

close()

Close a file descriptor

fork()

Create a new process

exec()

Replace process image

exit()

Terminate the calling process

malloc()

Allocate memory

free()

Free allocated memory

switch()

Switch to another process

Memory Map

User Space

Kernel Space

Process Table

PID	Process Name	State	Open Files	Memory Used
1	init	Running	3	1.2 MB

Welcome to OS System Calls Emulator! This is a mini-project to demonstrate how system calls work in an operating system. Type 'help' to see available commands or click on system calls in the sidebar.

user@system:~$