tmail.c - plan9port - [fork] Plan 9 from user space
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       ---
       tmail.c (691B)
       ---
            1 /*
            2  * #!/bin/sh
            3  * case $1 in
            4  * -n)
            5  *         exit 0 ;;
            6  * -m*|-f*|-r*|-p*|-e*|"")
            7  *         exec /usr/lib/upas/edmail $*
            8  *         exit $? ;;
            9  * *)
           10  *         exec /usr/lib/upas/send $*
           11  *         exit $? ;;
           12  * esac
           13  */
           14 
           15 
           16 extern *UPASROOT;
           17 
           18 #define        EDMAIL        "edmail"
           19 #define        SEND        "send"
           20 
           21 main (argc, argv)
           22         int argc;
           23         char **argv;
           24 {
           25         char *progname = SEND;
           26         char realprog[500];
           27 
           28         if (argc > 1) {
           29                 if (argv[1][0] == '-') {
           30                         switch (argv[1][1]) {
           31                         case 'n':
           32                                 exit (0);
           33 
           34                         case 'm':
           35                         case 'f':
           36                         case 'r':
           37                         case 'p':
           38                         case 'e':
           39                         case '\0':
           40                                 progname = EDMAIL;
           41                         }
           42                 }
           43         } else
           44                 progname = EDMAIL;
           45 
           46         sprint(realprog, "%s/%s", UPASROOT, progname);
           47         execv (realprog, argv);
           48         perror (realprog);
           49         exit (1);
           50 }