diff --git a/usr/shelly/shelly.c b/usr/shelly/shelly.c
index 4c2c285..9a8214c 100644
--- a/usr/shelly/shelly.c
+++ b/usr/shelly/shelly.c
@@ -12,10 +12,10 @@
 #include <maps/qemu_map.h>
 #include <aos/aos.h>
 #include <aos/inthandler.h>
-
 #include <aos/ump_binding.h>
 #include <aos/ump_chan.h>
 #include <aos/shelly_client.h>
+#include <aos/aos_rpc.h>
 
 #include "shelly.h"
 
@@ -44,7 +44,8 @@ static void handle_lpuart_interrupt(void * arg) {
         global_state->buf[global_state->buffer_i] = '\0';
         global_state->buffer_i += 1;
 
-        handle_shelly_cmd(global_state->buf, global_state->buffer_i);
+        err = handle_shelly_cmd(global_state->buf, global_state->buffer_i);
+        if (err_is_fail(err)) USER_PANIC_ERR(err, "while running command");
 
         global_state->buffer_i = 0;
 
diff --git a/usr/shelly/shelly_cmd.c b/usr/shelly/shelly_cmd.c
index 169ec28..d2cc1e6 100644
--- a/usr/shelly/shelly_cmd.c
+++ b/usr/shelly/shelly_cmd.c
@@ -1,48 +1,82 @@
 #include <stdlib.h>
 #include "shelly.h"
 
+__attribute__((__used__))
+static void parse_cmd_line(char * line, int * argc, char ** argv) {
+    *argc = 0;
+    char *token = strtok(line, " ");
+    while (token != NULL) {
+        argv[*argc] = token;
+        token = strtok(NULL, " ");
+        *argc += 1;
+    }
+}
 
-
-static void shelly_cmd_echo(char* argv[], int argc) {
+static errval_t shelly_cmd_echo(char * line) {
     errval_t err;
     SHELLY_DEBUG("[shelly_cmd_echo] argc=%d\n", argc);
 
-    for (int i = 0; argv[1][i] != '\0'; ++i) {
-        err = lpuart_putchar(global_state->uart_s, argv[1][i]);
+    for (int i = 0; line[i] != '\0'; ++i) {
+        err = lpuart_putchar(global_state->uart_s, line[i]);
         if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
     }
     err = lpuart_putchar(global_state->uart_s, '\0');
     if (err_is_fail(err)) USER_PANIC_ERR(err, "while trying to put character");
+
+    return SYS_ERR_OK;
 }
 
-static void handle_shelly_cmd(char* str, size_t len) {
+static errval_t shelly_cmd_run(char * line) {
+    errval_t err;
+
+    SHELLY_DEBUG("[shelly_cmd_run] line=%s\n", line);
+
+    // start process
+    domainid_t pid;
+    struct aos_rpc * rpc = aos_rpc_get_process_channel();
+    err = aos_rpc_process_spawn(rpc, line, 0, &pid);
+    if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to spawn process");
+    SHELLY_DEBUG("[shelly_cmd_run] spawned process\n");
+
+    // // get process name
+    // char *name;
+    // err = aos_rpc_process_get_name(rpc, pid, &name);
+    // if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to get process name");
+    // printf("Process Name: %s\n", name);
+
+    // // get all PIDs
+    // domainid_t *pids;
+    // size_t pid_count;
+    // err = aos_rpc_process_get_all_pids(rpc, &pids, &pid_count);
+    // if (err_is_fail(err)) USER_PANIC_ERR(err, "Failed to get all PIDs");
+    // printf("PIDs:\n");
+    // for(size_t i = 0; i < pid_count; ++i) {
+    //     printf(" %lu\n", pids[i]);
+    // }
+
+    return SYS_ERR_OK;
+}
+
+static errval_t handle_shelly_cmd(char* line, size_t len) {
     SHELLY_DEBUG("[handle_shelly_cmd] len=%d\n", len);
-
     if (len <= 1) {
-        return;
+        return SYS_ERR_OK;
     }
 
-    int argc = 1;
-    for (int i = 0; i < len; ++i) {
-        if (str[i] == ' ') ++argc;
-    }
-    char * argv[argc];
+    char * cmd = strtok(line, " ");
 
-    const char delim[2] = " ";
+    char * remaining_line = line + strlen(cmd) + 1;
 
-    for (int i = 0; i < argc; ++i) {
-        if (i == 0) {
-            argv[i] = strtok(str, delim);
-        } else {
-            argv[i] = strtok(NULL, delim);
-        }
-        SHELLY_DEBUG("[handle_shelly_cmd] arg[%d]=%s\n", i, argv[i]);
-    }
+    // debug_printf("remaining_line = %s\n", remaining_line);
 
-    if (strcmp(argv[0], "echo") == 0) {
-        shelly_cmd_echo(argv, argc);
+    if (strcmp(cmd, "echo") == 0) {
+        return shelly_cmd_echo(remaining_line);
+    } else if (strcmp(cmd, "run") == 0) {
+        return shelly_cmd_run(remaining_line);
     } else {
         SHELLY_DEBUG("unknown command %s\n", argv[0]);
     }
+
+    return SYS_ERR_OK;
 }