diff --git a/ansible_deployer/command_line.py b/ansible_deployer/command_line.py
index 35c90406..5d227521 100644
--- a/ansible_deployer/command_line.py
+++ b/ansible_deployer/command_line.py
@@ -2,6 +2,8 @@
 
 import sys
 import os
+import stat
+import re
 import argparse
 import logging
 import datetime
@@ -15,6 +17,7 @@
 
 
 APP_CONF = "/etc/ansible-deploy/ansible-deploy.yaml"
+CFG_PERMISSIONS = "0o644"
 
 
 def verify_subcommand(command: str):
@@ -154,10 +157,11 @@ def validate_options(options: dict):
 def load_configuration_file(config_file: str):
     """Function responsible for single file loading and validation"""
     #TODO: Add verification of owner/group/persmissions
+    config_path = os.path.join(conf["global_paths"]["config_dir"], config_file)
+    check_cfg_permissions_and_owner(config_path)
     logger.debug("Loading :%s", config_file)
 
-    with open(os.path.join(conf["global_paths"]["config_dir"], config_file), "r", encoding="utf8") \
-            as config_stream:
+    with open(config_path, "r", encoding="utf8") as config_stream:
         try:
             config = yaml.safe_load(config_stream)
         except yaml.YAMLError as e:
@@ -180,6 +184,22 @@ def load_configuration_file(config_file: str):
     logger.debug("Loaded:\n%s", str(config))
     return config
 
+def check_cfg_permissions_and_owner(cfg_path: str):
+    """Function to verify permissions and owner for config files"""
+    stat_info = os.stat(cfg_path)
+
+    if stat_info.st_uid == 0:
+        if oct(stat.S_IMODE(stat_info.st_mode)) == CFG_PERMISSIONS:
+            logger.debug("Correct permissions and owner for config file %s.", cfg_path)
+        else:
+            logger.error("File %s permissions are incorrect! Contact your sys admin.", cfg_path)
+            logger.error("Program will exit now.")
+            sys.exit(40)
+    else:
+        logger.error("File %s owner is not root! Contact your sys admin.", cfg_path)
+        logger.error("Program will exit now.")
+        sys.exit(41)
+
 def load_configuration():
     """Function responsible for reading configuration files and running a schema validator against
     it
@@ -224,6 +244,32 @@ def validate_user_task():
     """Function checking if user has rights to execute the task
     Rquired for: run"""
 
+def validate_commit(options: dict, config: dict):
+    """Function to validate commit value against config and assign final value"""
+    if not options["commit"]:
+        commit_id = None
+        logger.debug("Using default commit.")
+    else:
+        for item in config["tasks"]["tasks"]:
+            if item["name"] == options["task"]:
+                for elem in item["allowed_for"]:
+                    available_commits = elem.get("commit", [])
+                    for commit in available_commits:
+                        if re.fullmatch(commit, options["commit"]):
+                            commit_id = commit
+                            logger.debug("Using commit: %s .", commit_id)
+                            break
+                    else:
+                        continue
+                    break
+                else:
+                    logger.error("Requested commit %s is not valid for task %s.",
+                    options["commit"], options["task"])
+                    logger.error("Program will exit now.")
+                    sys.exit(56)
+
+    return commit_id
+
 def validate_option_values_against_config(config: dict, options: dict):
     """
     Function responsible for checking if option values match configuration
@@ -253,10 +299,13 @@ def validate_option_values_against_config(config: dict, options: dict):
                     logger.critical("Limit %s is not available for task %s.", options["limit"],
                                  options["task"])
                     sys.exit(54)
+
+    selected_items["commit"] = validate_commit(options, config)
+    logger.debug("Completed validate_option_values_with_config")
+
             #TODO: validate if user is allowed to use --commit
             #TODO: validate if user is allowed to execute the task on infra/stag pair
             #(validate_user_infra_stage(), validate_usr_task())
-            logger.debug("Completed validate_option_values_with_config")
 
     return selected_items
 
@@ -490,6 +539,7 @@ def get_all_user_groups():
 
 def load_global_configuration():
     """Function responsible for single file loading and validation"""
+    check_cfg_permissions_and_owner(APP_CONF)
     with open(APP_CONF, "r", encoding="utf8") as config_stream:
         try:
             config = yaml.safe_load(config_stream)
diff --git a/etc/schema/tasks.yaml b/etc/schema/tasks.yaml
index 0bcc326e..7e752afa 100644
--- a/etc/schema/tasks.yaml
+++ b/etc/schema/tasks.yaml
@@ -74,6 +74,11 @@ tasks:
                   stages:
                     type: list
                     required: True
+            commit:
+              type: list
+              required: False
+              schema:
+                type: string
       allow_limit:
         type: boolean
         required: True
diff --git a/etc/tasks.yaml b/etc/tasks.yaml
index e37b2f9f..95c03dcf 100644
--- a/etc/tasks.yaml
+++ b/etc/tasks.yaml
@@ -29,6 +29,8 @@ tasks:
           - name: testInfra
             stages:
               - testing
+        commit:
+          - test_version
       - group: root
         infra:
           - name: testInfra
@@ -36,6 +38,8 @@ tasks:
               - testing
               - prod
               - locked
+        commit:
+          - test_version
     allow_limit: True
 
   - name: task_empty
@@ -135,3 +139,22 @@ tasks:
               - prod
     allow_limit: True
 
+  - name: task_with_commit
+    play_items:
+      - run_bin_true
+    allowed_for:
+      - group: root
+        infra:
+          - name: testInfra
+            stages:
+              - testing
+          - name: testInfra2
+            stages:
+              - testing
+        commit:
+          - tags/v1.\d+
+          - tags/v2.4
+          - tags/v2.5.\d+
+          - tags/v3.\d+.5
+          - tags/v5.\d+
+    allow_limit: True
diff --git a/setup.py b/setup.py
index 893afbdf..bc60e4af 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@ def read(fname):
 # This call to setup() does all the work
 setup(
     name="ansible-deployer",
-    version="0.0.17",
+    version="0.0.18",
     description="Wrapper around ansible-playbook allowing configurable tasks and permissions",
     long_description=README,
     long_description_content_type="text/markdown",
diff --git a/tests/02-checkrun.sh b/tests/02-checkrun.sh
index dd5a9290..9d6ab17d 100755
--- a/tests/02-checkrun.sh
+++ b/tests/02-checkrun.sh
@@ -26,6 +26,16 @@ check_message_in_output "ansible-deployer run -t task_skipping -s prod -i testIn
 check_message_not_in_output "ansible-deployer run -t task_skipping -s testing -i testInfra2" "ran succesfully"# # Never skip
 check_message_not_in_output "ansible-deployer run -t task_skipping -s prod -i testInfra3" "\[INFO\]: Skipping playbook"
 
+echo -e "  ___ ____                                     _   _\n / _ \___ \            _____  _____  ___ _   _| |_(_) ___  _ __\n| | | |__) |  _____   / _ \ \/ / _ \/ __| | | | __| |/ _ \| '_ \ \n| |_| / __/  |_____| |  __/>  <  __/ (__| |_| | |_| | (_) | | | |\n \___/_____|          \___/_/\_\___|\___|\__,_|\__|_|\___/|_| |_|\n\n                               _ _\n  ___ ___  _ __ ___  _ __ ___ (_) |_ ___\n / __/ _ \| '_ \` _ \| '_ \` _ \| | __/ __|\n| (_| (_) | | | | | | | | | | | | |_\__ \ \n \___\___/|_| |_| |_|_| |_| |_|_|\__|___/\n"
+# Check --commit option
+check_run_ok "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v1.1"
+check_run_ok "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v2.4"
+check_run_ok "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v2.5.1"
+check_run_ok "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v3.6.5"
+check_message_in_output "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v1.0.1" '\[ERROR\]: Requested commit tags/v1.0.1 is not valid for task task_with_commit.'
+check_message_in_output "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v2.1" '\[ERROR\]: Requested commit tags/v2.1 is not valid for task task_with_commit.'
+check_message_in_output "ansible-deployer run -t task_with_commit -s testing -i testInfra -c tags/v3.6.6" '\[ERROR\]: Requested commit tags/v3.6.6 is not valid for task task_with_commit.'
+
 echo -e "   ___ ____                                     _   _\n  / _ \___ \            _____  _____  ___ _   _| |_(_) ___  _ __\n | | | |__) |  _____   / _ \ \/ / _ \/ __| | | | __| |/ _ \| '_ \ \n | |_| / __/  |_____| |  __/>  <  __/ (__| |_| | |_| | (_) | | | |\n  \___/_____|          \___/_/\_\___|\___|\__,_|\__|_|\___/|_| |_|\n \n        _   _\n   ___ | |_| |__   ___ _ __ ___\n  / _ \| __| '_ \ / _ \ '__/ __|\n | (_) | |_| | | |  __/ |  \__ \\n  \___/ \__|_| |_|\___|_|  |___/\n \n"
 # misc
 check_message_in_output 'ansible-deployer run -t task_empty -s testing -i testInfra' '\[CRITICAL\]: No playbooks found for requested task'