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By: a guest on
Jun 2nd, 2012 | syntax:
None | size: 1.05 KB | hits: 8 | expires: Never
after fork/execvp control does not return to parent
#include <stdio.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char* argv[]){
while(1){
print_the_prompt();
char user_text[100];
if( fgets(user_text, sizeof(user_text), stdin) != NULL ){
char* nl_char = strchr(user_text, 'n');
if( nl_char != NULL ){
*nl_char = ' ';
}
}
//printf("user_text = "%s"n", user_text);
if( is_command_built_in(user_text) ){
//run built in command
}
else{
//run regular command
execute_new_command(user_text);
}
}
return 0;
}
void print_the_prompt(){
printf("!: ");
}
int is_command_built_in(char* command){
return 0;
}
void execute_new_command(char* command){
pid_t pID = fork();
if(pID == 0){
//is child
char* execv_arguments[] = { command, (char*)0 };
execvp(command, execv_arguments);
}
else{
//is parent
printf("im done");
}
}