the MAIL command in UNIX and Pipes

twm, I think you're getting confused about who posted.

>twm, I think you're getting confused about who posted.
How so? The first part was to you, the second to RoshanX. As far as I can tell, each comment was sent to the proper person.

Nope , won't work. It will work if I use "Mail" instead of "mail". And I am using a sun os.

try doing something like:

Code:

---

...
pipe_id=popen(mail_command,"w");
fprintf(pipe_id,"Subject: %s\n",subject); //subject placed here
for(j=0;j<i;j++)
{
      fprintf(pipe_id,"%s",list[j]);
}
fprintf(pipe_id,"%c",EOF);
...

---

I'm not sure if you need the newline or if it's best to use it there, but it should work.

This is a tad late, but you could always do something like this (to solve the discrepency about "mail" and "Mail" :P)

Code:

---


#define YourEmail "[email protected]"
FILE *email;
char cmd[64] = "";

if((email = fopen("mail", "a+")) == NULL)
        die("Cannot open text file for email.\n");

fprintf(email, "To: %s\n", recpt);
fprintf(email, "From: %s\n", YourEmail);
fprintf(email, "Subject: There are %d users using %d processes\n\n", user_count, proc_count);

/*
** fprintf(email, "message line here\n");
** etc
*/

fclose(email);

sprintf(cmd, "/usr/lib/sendmail %s < mail", recpt);
system(cmd);

---

Not the best way, but it works, and I know, I had to use system() :(

I'm sure there are other ways, such as "fastmail", or "sendmail -t with popen() and pclose()", but like I said, this was just an idea I had and decided to post because of the "mail" "Mail" discussion and to show that the code for it isn't that long in C, as the other person suggested.