diff --git a/demo.sh b/demo.sh
new file mode 100755
index 0000000..3b8398c
--- /dev/null
+++ b/demo.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+shopt -s expand_aliases
+
+alias rt="./rtracker"
+
+rt Testing sleep... \
+	% sleep 3
+rt Hello world? \
+	%o echo Hello world
+rt Producing some error \
+	% rm not_exist
diff --git a/rtracker b/rtracker
new file mode 100755
index 0000000..002bcbd
Binary files /dev/null and b/rtracker differ
diff --git a/rtracker.c b/rtracker.c
new file mode 100644
index 0000000..09cf928
--- /dev/null
+++ b/rtracker.c
@@ -0,0 +1,112 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "c_cross_pack/libs/threads.h"
+
+char comment[1000] = "";
+char command[10000] = "";
+
+// Out of command execution
+char out[1000][100];
+int out_i = 0;
+
+bool runCommand(char* command) {
+	FILE *fp;
+	char path[1024];
+	int status;
+	
+	// Combine stdout and stderr using 2>&1
+	char fullCommand[1024];
+	snprintf(fullCommand, sizeof(fullCommand), "%s 2>&1", command);
+
+	/* Open the command for reading. */
+	fp = popen(fullCommand, "r");
+	if (fp == NULL) {
+		printf("Failed to run command\n");
+		return false;
+	}
+
+	/* Read the output a line at a time and store it in the out array */
+	while (fgets(path, sizeof(path), fp) != NULL) {
+		strncpy(out[out_i], path, 100);
+		out[out_i][99] = '\0';  // Ensure null termination
+		out_i++;
+		if (out_i >= 1000) {
+			break;  // Prevent overflow
+		}
+	}
+
+	/* Close */
+	status = pclose(fp);
+
+	/* Check the return status of the command */
+	if (WIFEXITED(status)) {
+		int exit_status = WEXITSTATUS(status);
+		if (exit_status != 0) {
+			return false;  // Command failed
+		}
+	} else {
+		return false;  // Command did not exit normally
+	}
+
+	return true;
+}
+
+void* loadAnim() {
+	char anim[] = {'-', '\\', '|', '/'};
+	while (true) {
+		for (size_t i = 0; i < sizeof(anim)/sizeof(anim[0]); i++) {
+			printf("\r[\033[1;33m%c\033[1;0m] %s", anim[i], comment);
+			fflush(stdout);
+			usleep(100 * 1000); // 100 ms
+		}	
+	}
+}
+
+void getOut() {
+	for (int i = 0; i <= out_i; i++) {
+		printf("%s", out[i]);
+	}
+}
+
+int main(int argc, char **argv) {
+	bool isCommand = false;
+	bool forceOut = false;
+	for(int i = 1; i < argc; i++) {
+		if (isCommand == false) {
+			if (strcmp(argv[i], "%o") == 0) {
+				isCommand = true;
+				forceOut = true;
+			} else if (strcmp(argv[i], "%") == 0) {
+				isCommand = true;
+			} else {
+				strcat(comment, argv[i]);
+				strcat(comment, " ");	
+			}
+		} else {
+			strcat(command, argv[i]);
+			strcat(command, " ");
+		}
+	}
+
+	void* thread_handle;
+	start_thread(&thread_handle, loadAnim);
+	if (runCommand(command)) {
+		kill_thread(thread_handle);
+		printf("\r[\033[1;32m🗸\033[1;0m] %s\n", comment);
+		if (forceOut == true) {
+			getOut();
+		}
+	} else {
+		kill_thread(thread_handle);
+		printf("\r[\033[1;31m𐄂\033[1;0m] %s\n", comment);
+		// Get out of failed command
+		getOut();
+		return 1;
+	}
+
+	return 0;
+}
diff --git a/test b/test
new file mode 100644
index 0000000..e69de29