diff --git a/script.py b/script.py
index d0d9005..9b1d647 100644
--- a/script.py
+++ b/script.py
@@ -90,13 +90,26 @@ journal_today = subprocess.run(["sudo", "journalctl","_COMM=systemd-logind","_CO
 
 kitchen_services = run_command(["sudo", "journalctl", "-u", "kitchen-stove.service", "-u", "kitchen-bin.service", "-u", "kitchen-fridge.service", "-r", "-n"] + get_journalctl_on()).splitlines()
 
+try:
+    groups_created = subprocess.run(['grep','groupadd'], capture_output=True, input=journal_today.stdout)..stdout.decode('UTF-8').strip().splitlines()
+    groups_removed = subprocess.run(['grep','groupremove'], capture_output=True, input=journal_today.stdout)..stdout.decode('UTF-8').strip().splitlines()
+    users_created_today = subprocess.run(['grep','useradd'], capture_output=True, input=journal_today.stdout)..stdout.decode('UTF-8').strip().splitlines()
+    user_modified = subprocess.run(['grep','usermod'], capture_output=True, input=journal_today.stdout)..stdout.decode('UTF-8').strip().splitlines()
+    user_deleted = subprocess.run(['grep','userdel'], capture_output=True, input=journal_today.stdout)..stdout.decode('UTF-8').strip().splitlines()
+    logins_today = subprocess.run(['grep','New session'], capture_output=True, input=journal_today.stdout)..stdout.decode('UTF-8').strip().splitlines()
+    
+except subprocess.CalledProcessError as e:
+    raise RuntimeError("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))
+
+
+
 # loading the jinja template environment
 print("Filling the template");
 env = Environment(loader=FileSystemLoader("/home/xpub/www/html/tl-dr/templates"))
 
 # loading the template (use template.jinja when generating the html webview)
 template = env.get_template("book.jinja")
-fallback = list_package_installs
+
 # rendering the template and storing the resultant text in variable output
 output = template.render(
     now = now.strftime("%B %dth %Y"),
@@ -113,12 +126,12 @@ output = template.render(
     list_active_services = run_command(["sudo", "service", "--status-all"]).splitlines() if not time_ago_arg else False,
     debian_version = run_command(["cat", "/etc/debian_version"]) if not time_ago_arg else False,
     hostname = run_command(["hostname","-i"]) if not time_ago_arg else False,
-    groups_created = run_command(['grep', '-v','groupadd'], based=journal_today.stdout).splitlines(),
-    groups_removed = run_command(['grep', '-v','groupremove'], based=journal_today.stdout).splitlines(),
-    users_created_today = run_command(['grep', '-v','useradd'], based=journal_today.stdout).splitlines(),
-    user_modified = run_command(['grep', '-v','usermod'], based=journal_today.stdout).splitlines(),
-    user_deleted = run_command(['grep', '-v','userdel'], based=journal_today.stdout).splitlines(),
-    logins_today = run_command(['grep', '-v','New session'], based=journal_today.stdout).splitlines(),
+    groups_created = groups_created,
+    groups_removed = groups_removed,
+    users_created_today = users_created_today,
+    user_modified = user_modified,
+    user_deleted = user_deleted,
+    logins_today = logins_today
 )