[C] Stocker les paths lus dans env Unix

$ cat x4.c
#include <stdio.h>
#include <stdlib.h>

main()
{
	char * path;
	path=getenv("PATH");
	printf("%s\n", path);
}
$ 
$ make x4
cc     x4.c   -o x4
$ ./x4
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
$ 

 env | grep '\bPATH'

#include <stdio.h>
#include <stdlib.h>

int main ()
{
  char * Path;
  Path = getenv("PATH");
  if (Path!=NULL)
    printf ("The current path is: %s",Path);
  return EXIT_SUCCESS;
}

$ cat x4.c
#include <unistd.h>
#include <string.h>
#include <stdio.h>

extern char ** environ;

main()
{
	int i=0;
	while(environ[i])
	{
		if(!strncmp(environ[i],"PATH",4))
			printf("%s\n", environ[i]);
		i++;
	}
}
$ make x4
cc     x4.c   -o x4
$ ./x4
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
$