/* ---- HEADERS ---- */

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



/* ---- CONSTANTS AND VARIABLES ---- */

// Max PID
int max_pid()
{

	FILE *mp = fopen("/proc/sys/kernel/pid_max", "r");
	char max_p[10];
	fgets(max_p, 10, mp);
	int max_pid = atoi(max_p);
	fclose(mp);
	return max_pid;
	
}




/* ----SUBPROCESSES ---- */

// Process Listing
int ps()
{
	
	int MAX_PID = max_pid();
	int i;
	for (i=0; i <= MAX_PID; i++)
	{
	
		char istr[10];
		sprintf(istr, "%d", i);
		char filestr[20];
		strcpy(filestr, strcat("/proc/", istr));
		
		char filestr1[30];
		strcpy(filestr1, strcat(filestr, "/cmdline"));
		FILE *process1 = fopen(filestr1, "r");
		char prout1[100];
		fread(prout1, sizeof(char), 100, process1);
		printf("%s\n", prout1);
		fclose(process1);
		
		char filestr2[30];
		strcpy(filestr2, strcat(filestr, "/fd"));
		FILE *process2 = fopen(filestr2, "r");
		char prout2[100];
		fread(prout2, sizeof(char), 100, process2);
		printf("%s\n", prout2);
		fclose(process2);
		
		char filestr3[30];
		strcpy(filestr1, strcat(filestr, "/status"));
		FILE *process3 = fopen(filestr3, "r");
		char prout3[100];
		fread(prout3, sizeof(char), 100, process3);
		printf("%s\n\n\n\n\n", prout3);
		fclose(process3);
	
	}
	
	return 0;
	
}





int main()
{
	
	ps();
	
	return 0;

}

		strcpy(filestr, strcat("/proc/", istr));