* shell_commands can be added as a module to user defined shell commands

sys/shell/shell.c

@@ -47,17 +47,30 @@ and the mailinglist (subscription via web site)
 #include <malloc.h>
 #include <stdlib.h>
 #include <shell.h>
+#include <shell_commands.h>
+#include <stdint.h>
 
 static void(*find_handler(const shell_command_t *command_list, char *command))(char*) {
-    const shell_command_t *entry = command_list;
+    const shell_command_t* entry = command_list;
 
-    while(entry->name != NULL) {
+    while (entry->name != NULL) {
+        if ( strcmp(entry->name, command) == 0) {
+            return entry->handler;
+        } else {
+            entry++;
+        }
+    }
+    
+#ifdef MODULE_SHELL_COMMANDS
+    entry = _shell_command_list;
+    while (entry->name != NULL) {
         if ( strcmp(entry->name, command) == 0) {
             return entry->handler;
         } else {
             entry++;
         }
     }
+#endif
     return NULL;
 }
 
@@ -65,11 +78,20 @@ static void print_help(const shell_command_t *command_list) {
     const shell_command_t *entry = command_list;
 
     printf("%-20s %s\n", "Command", "Description");
+    puts("---------------------------------------");
 
-    while(entry->name != NULL) {
+    while (entry->name != NULL) {
+        printf("%-20s %s\n", entry->name, entry->desc);
+        entry++;
+    }
+    
+#ifdef MODULE_SHELL_COMMANDS
+    entry = _shell_command_list;
+    while (entry->name != NULL) {
         printf("%-20s %s\n", entry->name, entry->desc);
         entry++;
     }
+#endif
 }
 
 static void handle_input_line(shell_t *shell, char* line) {
@@ -122,7 +144,7 @@ void shell_run(shell_t *shell) {
     char line_buf[255];
 
     while(1) {
-        shell->put_char('> ');
+        shell->put_char('>');
         int res = readline(shell, line_buf, sizeof(line_buf));
         if (! res ) {
             char* line_copy = strdup(line_buf);