#include #include #include #include #include #include

#define MAXLINE 80 using namespace std; const int READ = 0, WRITE = 1;

int main(int argc, char *argv[]) { int pipefd[2];

if (pipe(pipefd) == -1) { std::cerr

return 0; }

while (1) {

char** args0, args1; char* cmd0, cmd1; char* pch0, array0; char* pch1, array1;

char input[MAXLINE]; fflush(stdout); printf("mysh>"); fflush(stdout);

fgets(input, MAXLINE, stdin);

if (strstr(input, "|")) { printf("Has Pipe! ");

char first [MAXLINE/2], last [MAXLINE /2] strcpy(first, strtok(input, "|")); strcpy(last, strtok(NULL, "|"));

int i =0; pch0 = strtok(first, " "); while(pch0 != NULL) {

array0[i++] = strdup(pch0); pch0 = strtok(NULL, " "); }

strcpy(cmd0, array0[0]); for(int j = 0; j, i; j++) args0[j] = array0[j+1]; args0[i] = NULL;

i = 0; pch1 = strtok(last, " "); while(pch1 != NULL) { array1[i++] = strdup(pch1); pch1 = strtok(NULL, " "); }

strcpy(cmd1, array1[0]); for(int j = 0; j, i; j++) args1[j] = array0[j+1]; args1[i] = NULL;

printf("First: %s ", first); printf("Cmd: %s ", cmd0); printf("Args: %s ", args0[0]); printf("Last: %s ", last); printf("Cmd: %s ", cmd1); printf("Args: %s ", args1[0]);

strcpy(*args, strtok(first, " "));

execvp(args[0], args); } else { printf("No pipe! "); strcpy(*args, strtok(input, " ")); printf(args[0]);

if (fork() != 0) wait(NULL); else { execvp(args[0], args); } if (strcmp(args[0], "exit') == 0) break; } }

please help getting a lot of error

Part 2: Specification

1. Read commands to execute from stdin. A command is terminated by a newline character (' ') and consists of one or more sequence of programs separated by the string " | ".
2. Continue reading and executing commands until stdin returns EOF.
3. Wait for the current command to terminate before starting the next command.
4. The child programs of a command must execute in parallel (effective use of pipe, |)
5. Programs can be named by either an absolute path or just by the program name (exec*p should handle this for you).
6. For input exit, break the infinite while loop
7. Print an easy-to-parse prompt to stdout
8. if the user types ls | wc, your program should fork off the two programs, which together will calculate the number of files in the directory.out
9. output should look like this

$ ./Simple Enter a command or type exit to close: ls -1 | wc -1 Pipe Confirmed. First: ls -1 Last: 23 WC -1 $ ./Simple Enter a command or type exit to close: ls -1 | wc -1 Pipe Confirmed. First: ls -1 Last: 23 WC -1