gistfile1.txt

$ cat print_buf.c 
#include <stdio.h>
 
int main(int argc, char** argv, char** envp) {
  char buf[100];
  printf("Stack at %p\n", buf);
 
	int i;
	for (i = 0; envp[i]; i++) {
		printf("%p: %s\n", envp[i], envp[i]);
	}
}
$ env -i ./a.out howdy_bro
Stack at 0xffffddf8
$ env -i gdb -q ./a.out 
Reading symbols from /home/ppp/a.out...(no debugging symbols found)...done.
(gdb) show environment
LINES=24
COLUMNS=84
(gdb) unset environment LINES
(gdb) unset environment COLUMNS
(gdb) r howdy_bro
Starting program: /home/ppp/a.out howdy_bro
Stack at 0xffffddc8
0xffffdfd2: PWD=/home/ppp
0xffffdfe0: SHLVL=0