How can a C/C++ program put itself into background?

Question

What\'s the best way for a running C or C++ program that\'s been launched from the command line to put itself into the background, equivalent to if the user had launched fro

Answer 1

So, as you say, just fork()ing will not do the trick. What you must do is fork() and then re-exec(), as this code sample does:

#include stdio.h>
#include 
#include 

#include 

int main(int argc, char **argv)
{
    int i, j;

    for (i=1; i

The loop is to check for a --daemon argument, and if it is present, remove it before re-execing so an infinite loop is avoided.

I don't think this will work if the binary is put into the path because argv[0] is not necessarily a full path, so it will need to be modified.