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Please run this program and tell me what happens.
(Extract the 3 files: shm1.c, shm2.c, Makefile; then "make test")

Regards,
	Ignatios
-- 
 * Progress (n.): The process through which Usenet has evolved from
   smart people in front of dumb terminals to dumb people in front of
   smart terminals.  -- obs@burnout.demon.co.uk (obscurity)

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CC=gcc
COPTS=-O2

all: shm1 shm2

clean: ; rm shm1 shm2

test: all
	./shm1
	./shm2

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#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>

#include <stdio.h>



int
main(int argc, char *argv[]) {
	int myid;
	char *buf;
	void *p;

	myid = shmget((key_t)0x4712, 80, IPC_CREAT| 0700);
	if (myid == -1) {
		perror("shmget");
		exit(1);
	}

	printf("Returned %d\n", myid);

	p = shmat(myid, 0, 0);
	if (p == (void *)-1) {
		perror("shmat");
		exit(1);
	}
	printf("Returned 0x%08x\n", p);
	strncpy((char *)p,
	    "The quick brown fox jumps over the lazy dogs' back", 80);

}

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#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>

#include <stdio.h>



int
main(int argc, char *argv[]) {
	int myid, rc;
	void *p;

	myid = shmget((key_t)0x4712, 80,  0700);
	if (myid == -1) {
		perror("shmget");
		exit(1);
	}

	printf("Returned %d\n", myid);
	p = shmat(myid, 0, 0);
	printf("%-80s\n", p);

	rc = shmctl(myid, IPC_RMID, 0);
	if (rc == -1) {
		perror("shmctl");
		exit(1);
	}
}

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