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You may be fighting buffers because you're using printf(). This keeps it in memory until it decides it's convenient to print it(usually, whenever it finds a newline). And when you fork(), you get a...

Seems quite on-topic to me.

cd is special because it's not a command you run, it's the system call chdir(), and it has to be done inside the shell itself, not in a forked copy. Remember that the...

Try running a 'sleep 60 &' then a 'ls'. If it works, it won't wait a full minute for the sleep to finish before running ls. Nope. You've already created a child with fork(). Fork clones a process,...

...I keep forgetting the strtok. Yes, it would. That's simple enough. To run things without waiting for them, don't wait for them.void Execute(int background, char* cmd[])
{
pid_t pid;
...

Please read my reply to you. "strcmp" doesn't do what you think it does.