int sh_execute(char **args, int argc)
{
int i;
char ***cmd;
int cmdn;
if(argc > 2){
// printf("%d\n", argc);
cmd = split_multiple(argc, args, &cmdn);
return fork_pipes(cmdn, cmd);
}
if (args[0] == NULL) {
// An empty command was entered.
return 1;
}
for (i = 0; i < sh_num_builtins(); i++) {
if (strcmp(args[0], builtin_str[i]) == 0) {
return (*builtin_func[i])(args);
}
}
return sh_launch(args);
}
int main(int argc, char **argv)
{
/*TODO Define isSignal, should be set by a macro at compilation time*/
int i;
if (argc == 1) /* There were no arguments */
{
char *printenv[] = { "printenv", 0};
char *sort[] = { "sort", 0 };
char *less[] = { "less", 0 };
struct command cmd[] = { {printenv}, {sort}, {less} };
fork_pipes(3, cmd);
}
else
{
char *tmp;
int len = 1;
for (i = 1; i < argc; i++)
{
len += strlen(argv[i]) + 2;
}
tmp = (char *) malloc(len);
tmp[0] = '\0';
int pos = 0;
for (i = 1; i < argc; i++)
{
pos += sprintf(tmp + pos, "%s%s", (i == 1 ? "" : "|"), argv[i]);
}
char *printenv[] = { "printenv", 0};
char *grep[] = { "grep", "-E", tmp, NULL};
char *sort[] = { "sort", 0 };
char *less[] = { "less", 0 };
struct command cmd[] = { {printenv}, {grep}, {sort}, {less} };
fork_pipes(4, cmd);
free(tmp);
}
return(0);
}
int main ()
{
const char *ls[] = { "ls", "-l", 0 };
const char *awk[] = { "awk", "{print $1}", 0 };
const char *sort[] = { "sort", 0 };
const char *uniq[] = { "uniq", 0 };
struct command cmd [] = { {ls}, {awk}, {sort}, {uniq} };
return fork_pipes (4, cmd);
}
int main ()
{
const char *ls[] = { "ls", "-l", 0 };
const char *awk[] = { "awk", "{print $1}", 0 };
const char *sort[] = { "sort", 0 };
const char *uniq[] = { "uniq", 0 };
struct command cmd [] = { {ls}, {awk}, {sort}, {uniq} };
printf("!!!!!IN SPAWN:%s\n", cmd[1].argv[0]); /*I added to understand the cmd struct*/
return fork_pipes (4, cmd);
}
void execute(int cmdc,command *cmd)
{
pid_t pid;
int status;
if ((pid = fork()) < 0) {
printf("*** ERROR: forking child process failed\n");
exit(1);
}
else if (pid == 0) {
fork_pipes(cmdc,cmd);
}
else {
while (wait(&status) != pid)
;
}
}