diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7587ca..41ef860 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,28 +1,28 @@
 # Changelog
 
-## [0.1.1][]
+## [0.1.3]
 
 ### Changed
 
-- Bugfix: kill process now passes correct parameter
-- Refactory: abstract core workflow into one common function to reduce duplicates
+-  Refactory: [Issue #4](https://github.com/chaostoolkit-incubator/chaostoolkit-saltstack/issues/4) Salt API accepts eauth method as parameter in configuration
 
 ### Added
 
-- Network experiments now accepts device name to adapt different os
-- Add experiment action of kill processes by name
-- Add experiment action of kill process by PID
-- Add experiment probe to check process PID by name
+-  Add experiment action: run customized command line with run_cmd method
+
+## [0.1.1]
 
 ### Changed
 
-- Refactory: abstract core workflow into one common function to reduce duplicates
+-  Bugfix: kill process now passes correct parameter
+-  Refactory: abstract core workflow into one common function to reduce duplicates
 
 ### Added
 
-- Add experiment action of kill processes by name
-- Add experiment action of kill process by PID
-- Add experiment probe to check process PID by name
+-  Network experiments now accepts device name to adapt different os
+-  Add experiment action of kill processes by name
+-  Add experiment action of kill process by PID
+-  Add experiment probe to check process PID by name
 
 ## [0.1.0][]
 
diff --git a/README.md b/README.md
index 1871592..afbb15c 100644
--- a/README.md
+++ b/README.md
@@ -120,6 +120,7 @@ There are two ways of doing this:
     ```
     
 * or you inject the secrets explicitly to the experiment definition:
+  SALTMASTER_EAUTH is optional and default to pam
 
     ```json
     {
@@ -127,6 +128,7 @@ There are two ways of doing this:
             "SALTMASTER_HOST": "https://172.10.20.666",
             "SALTMASTER_USER": "username",
             "SALTMASTER_PASSWORD": "password"
+            "SALTMASTER_EAUTH": "sharedsecret"
         }
     }
     ```
diff --git a/chaossaltstack/__init__.py b/chaossaltstack/__init__.py
index 57e9fa7..5fa8566 100644
--- a/chaossaltstack/__init__.py
+++ b/chaossaltstack/__init__.py
@@ -33,6 +33,7 @@ def __init__(self, configuration):
         elif 'username' in configuration:
             self.username = configuration['username']
             self.password = configuration['password']
+            self.eauth = configuration['eauth']
         # Default settings for Salt Master
         self.headers = {"Content-type": "application/json"}
         self.params = {'client': 'local', 'fun': '', 'tgt': ''}
@@ -40,7 +41,7 @@ def __init__(self, configuration):
         self.login_url = self.url + "/login"
         self.login_params = {
             'username': self.username, 'password': self.password,
-            'eauth': 'pam'
+            'eauth': self.eauth
         }
 
     def run_cmd(self, tgt, method: str, arg=None):
@@ -164,9 +165,10 @@ def saltstack_api_client(secrets: Secrets = None) -> salt_api_client:
 
         * SALTMASTER_HOST: Salt Master API address
 
-        You can authenticate with user / password via:
+        You can authenticate with user / password / eauth via:
         * SALTMASTER_USER: the user name
         * SALTMASTER_PASSWORD: the password
+        * SALTMASTER_EAUTH: the auth method, default to pam
 
         Or via a token:
         * SALTMASTER_TOKEN
@@ -197,6 +199,7 @@ def lookup(k: str, d: str = None) -> str:
         if "SALTMASTER_USER" in env or "SALTMASTER_USER" in secrets:
             configuration['username'] = lookup("SALTMASTER_USER", "")
             configuration['password'] = lookup("SALTMASTER_PASSWORD", "")
+            configuration['eauth'] = lookup("SALTMASTER_EAUTH", "pam")
         elif "SALTMASTER_TOKEN" in env or "SALTMASTER_TOKEN" in secrets:
             configuration['token'] = lookup("SALTMASTER_TOKEN")
         else:
diff --git a/chaossaltstack/machine/actions.py b/chaossaltstack/machine/actions.py
index ea48467..9c723b4 100644
--- a/chaossaltstack/machine/actions.py
+++ b/chaossaltstack/machine/actions.py
@@ -12,12 +12,12 @@
 from ..types import SaltStackResponse
 from .constants import OS_LINUX, OS_WINDOWS
 from .constants import BURN_CPU, FILL_DISK, NETWORK_UTIL, \
-    BURN_IO, KILLALL_PROCESSES, KILL_PROCESS
+    BURN_IO, KILLALL_PROCESSES, KILL_PROCESS, RUN_CMD
 
 
 __all__ = ["burn_cpu", "fill_disk", "network_latency", "burn_io",
            "network_loss", "network_corruption", "network_advanced",
-           "killall_processes", "kill_process"]
+           "killall_processes", "kill_process", "run_cmd"]
 
 
 def burn_cpu(instance_ids: List[str] = None,
@@ -209,7 +209,7 @@ def network_loss(instance_ids: List[str] = None,
     param["duration"] = execution_duration
     param["param"] = "loss " + loss_ratio
     param["device"] = device
-    
+
     return __default_salt_experiment__(instance_ids=instance_ids,
                                        execution_duration=execution_duration,
                                        param=param,
@@ -253,7 +253,6 @@ def network_corruption(instance_ids: List[str] = None,
     param["param"] = "corrupt " + corruption_ratio
     param["device"] = device
 
-
     return __default_salt_experiment__(instance_ids=instance_ids,
                                        execution_duration=execution_duration,
                                        param=param,
@@ -341,7 +340,7 @@ def killall_processes(instance_ids: List[str] = None,
         Chaostoolkit Secrets
     """
     logger.debug(
-        "Start network_latency: configuration='{}', instance_ids='{}'".format(
+        "Start killall_process: configuration='{}', instance_ids='{}'".format(
             configuration, instance_ids))
 
     param = dict()
@@ -389,7 +388,7 @@ def kill_process(instance_ids: List[str] = None,
         Chaostoolkit Secrets
     """
     logger.debug(
-        "Start network_latency: configuration='{}', instance_ids='{}'".format(
+        "Start kill_process: configuration='{}', instance_ids='{}'".format(
             configuration, instance_ids))
 
     param = dict()
@@ -406,6 +405,50 @@ def kill_process(instance_ids: List[str] = None,
                                        )
 
 
+def run_cmd(instance_ids: List[str] = None,
+            execution_duration: str = "60",
+            cmd: List[str] = None,
+            configuration: Configuration = None,
+            secrets: Secrets = None) -> SaltStackResponse:
+    """
+    run cmd
+    Linus -> Shell
+    Windows -> PowerShell
+
+    Parameters
+    ----------
+    instance_ids : List[str]
+        Filter the virtual machines. If the filter is omitted all machines in
+        the subscription will be selected as potential chaos candidates.
+    execution_duration : str, optional default to 1 second
+        This is not technically not useful as the process usually is killed
+        without and delay, however you can set more seconds here to let the
+        thread wait for more time to extend your experiment execution in case
+        you need to watch more on the observation metrics.
+    cmd : List[str]
+        Lines of your commands
+    configuration : Configuration
+        Chaostoolkit Configuration
+    secrets : Secrets
+        Chaostoolkit Secrets
+    """
+    logger.debug(
+        "Start run_cmd: configuration='{}', instance_ids='{}'".format(
+            configuration, instance_ids))
+
+    param = dict()
+    param["duration"] = execution_duration
+    param["cmd"] = cmd
+
+    return __default_salt_experiment__(instance_ids=instance_ids,
+                                       execution_duration=execution_duration,
+                                       param=param,
+                                       experiment_type=RUN_CMD,
+                                       configuration=configuration,
+                                       secrets=secrets
+                                       )
+
+
 ###############################################################################
 # Private helper functions
 ###############################################################################
@@ -459,25 +502,52 @@ def __default_salt_experiment__(instance_ids: List[str] = None,
         )
 
 
-def __construct_script_content__(action, os_type, parameters):
+def __construct_script_content__(action: str = None,
+                                 os_type: str = None,
+                                 parameters: dict = None):
+    """
+    As for now, no Windows action supported except burn CPU
+
+    :param action:
+    :param os_type: { OS_LINUX | OS_WINDOWS }
+    :param parameters:
+    :return:
+    """
 
-    if os_type == OS_WINDOWS:
-        script_name = action+".ps1"
-        # TODO in ps1
-        cmd_param = '\n'.join(
-            ['='.join([k, "'"+v+"'"]) for k, v in parameters.items()])
-    elif os_type == OS_LINUX:
-        script_name = action+".sh"
-        cmd_param = '\n'.join(
-            ['='.join([k, "'"+v+"'"]) for k, v in parameters.items()])
+    cmd_param = ""
+    if os_type == OS_LINUX:
+        file_suffix = ".sh"
+        p_delimiter = ""
+        cmdline_delimiter = " && "
+    elif os_type == OS_WINDOWS:
+        file_suffix = ".ps1"
+        p_delimiter = "$"
+        cmdline_delimiter = "\n"
     else:
         raise FailedActivity(
             "Cannot find corresponding script for {} on OS: {}".format(
                 action, os_type))
 
+    if action == "run_cmd":
+        cmdline_param = cmdline_delimiter.join(parameters['cmd'])
+        # parameters.pop('cmd')
+        del parameters['cmd']
+    else:
+        cmdline_param = ""
+
+    if parameters is not None:
+        param_list = list()
+        for k, v in parameters.items():
+            param_list.append('='.join([p_delimiter + k, "'" + v + "'"]))
+        cmd_param = '\n'.join(param_list)
+    else:
+        logger.info("No parameter parsed, return default script content")
+
+    script_name = action + file_suffix
+
     with open(os.path.join(os.path.dirname(__file__),
                            "scripts", script_name)) as file:
         script_content = file.read()
     # merge duration
-    script_content = cmd_param + "\n" + script_content
+    script_content = cmd_param + "\n" + cmdline_param + "\n" + script_content
     return script_content
diff --git a/chaossaltstack/machine/constants.py b/chaossaltstack/machine/constants.py
index 637797c..59b8a18 100644
--- a/chaossaltstack/machine/constants.py
+++ b/chaossaltstack/machine/constants.py
@@ -9,3 +9,4 @@
 NETWORK_UTIL = "network_advanced"
 KILLALL_PROCESSES = "killall_processes"
 KILL_PROCESS = "kill_process"
+RUN_CMD = "run_cmd"
diff --git a/chaossaltstack/machine/scripts/burn_io.sh b/chaossaltstack/machine/scripts/burn_io.sh
index 73fab70..288d63e 100644
--- a/chaossaltstack/machine/scripts/burn_io.sh
+++ b/chaossaltstack/machine/scripts/burn_io.sh
@@ -8,7 +8,7 @@ done
 EOF
 
 chmod +x /tmp/loop.sh
-timeout --preserve-status $duration /tmp/loop.sh
+timeout $duration /tmp/loop.sh
 
 # while true;
 # do
@@ -16,7 +16,7 @@ timeout --preserve-status $duration /tmp/loop.sh
 # done &
 
 ret=$?
-if [ $ret -eq 0 ]; then
+if [[ $ret -eq 0 || $ret -eq 124 ]]; then
     echo "experiment burnio -> <$instance_id>: success"
 else
     echo "experiment brunio -> <$instance_id>: fail"
diff --git a/chaossaltstack/machine/scripts/network_advanced.sh b/chaossaltstack/machine/scripts/network_advanced.sh
index d761188..83dff6a 100644
--- a/chaossaltstack/machine/scripts/network_advanced.sh
+++ b/chaossaltstack/machine/scripts/network_advanced.sh
@@ -17,9 +17,9 @@ fi
 experiment=$(tc qdisc add dev $device root netem $param)
 ret=$?
 if [ $ret -eq 0 ]; then
-    echo "experiment network_latency -> <$instance_id>: success"
+    echo "experiment network:[$param] -> <$instance_id>: success"
 else
-    echo "experiment network_latency -> <$instance_id>: fail"
+    echo "experiment network:[$param] -> <$instance_id>: fail"
 fi
 
 #Sleep $duration
@@ -38,7 +38,7 @@ fi
 tc -s qdisc show dev $device |grep pfifo_fast 2>&1 >/dev/null
 ret2=$?
 if [ $ret2 -eq 0 ]; then
-    echo "recover network_latency -> <$instance_id>: success"
+    echo "recover network:[$param] -> <$instance_id>: success"
 else
-    echo "recover network_latency -> <$instance_id>: fail"
+    echo "recover network:[$param] -> <$instance_id>: fail"
 fi
\ No newline at end of file
diff --git a/chaossaltstack/machine/scripts/run_cmd.ps1 b/chaossaltstack/machine/scripts/run_cmd.ps1
new file mode 100644
index 0000000..e4ea4f6
--- /dev/null
+++ b/chaossaltstack/machine/scripts/run_cmd.ps1
@@ -0,0 +1,12 @@
+Try
+{
+
+}
+Catch
+{
+
+}
+Finally
+{
+
+}
\ No newline at end of file
diff --git a/chaossaltstack/machine/scripts/run_cmd.sh b/chaossaltstack/machine/scripts/run_cmd.sh
new file mode 100644
index 0000000..de9d4c2
--- /dev/null
+++ b/chaossaltstack/machine/scripts/run_cmd.sh
@@ -0,0 +1,7 @@
+
+ret=$?
+if [ $ret -eq 0 ]; then
+    echo "experiment run_cmd -> <$instance_id>: success"
+else
+    echo "experiment run_cmd -> <$instance_id>: fail"
+fi
\ No newline at end of file