BSD 3 development

[unix-history] / usr / src / cmd / from.c

#include <stdio.h>
#include <pwd.h>

struct  passwd *getpwuid();

main()
{
       char lbuf[BUFSIZ];
       register struct passwd *pp;

       if (chdir("/usr/spool/mail") < 0)
               exit(1);
       pp = getpwuid(getuid());
       if (pp == 0) {
               fprintf(stderr, "Who are you?\n");
               exit(1);
       }
       if (freopen(pp->pw_name, "r", stdin) == NULL)
               exit(0);
       while(fgets(lbuf, sizeof lbuf, stdin) != NULL)
               if (lbuf[0] == 'F' && lbuf[1] == 'r' && lbuf[2] == 'o' && lbuf[3] == 'm')
                       printf("%s", lbuf);
       exit(0);
}