diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7243ae5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__/
+*.swp
diff --git a/client/lib/engine/bin/SystemLib.py b/client/lib/engine/bin/SystemLib.py
index 65476ae..b8449a5 100644
--- a/client/lib/engine/bin/SystemLib.py
+++ b/client/lib/engine/bin/SystemLib.py
@@ -1,9 +1,11 @@
 import subprocess
 import datetime
+from zoneinfo import ZoneInfo
 import sys
 import os    
 import shutil
 
+import ogGlobals
 from DiskLib import *
 from CacheLib import *
 from StringLib import *
@@ -14,40 +16,53 @@ print (">>>>>>>>>>>>>>>>>>>> Load ", __name__, " <<<<<<<<<<<<<<<<<<<<<<")
 #OG_ERR_REPO, OG_ERR_NOTOS, OG_ERR_NOGPT, OG_ERR_OUTOFLIMIT, OG_ERR_IMAGE, OG_ERR_CACHE
 #OGLOGSESSION, OGLOGCOMMAND, OGLOGFILE, OG_ERR_LOCKED, OG_ERR_PARTITION, OG_ERR_FORMAT, OG_ERR_NOTEXEC, OG_ERR_NOTFOUND
 
-def ogEcho(*args):
-    # Variables locales
-    CONT = 1
-    LOGS = ""
-    LOGLEVEL = ""
-    DATETIME = ""
+def _logtype2logfile (t):
+    if   'log'     == t: return ogGlobals.OGLOGFILE
+    elif 'command' == t: return ogGlobals.OGLOGCOMMAND
+    elif 'session' == t: return ogGlobals.OGLOGSESSION
+    else: raise Exception (f'unknown log type ({t})')
+#/**
+#         ogEcho [str_logtype ...] [str_loglevel] "str_message" ...
+#@brief   Muestra mensajes en consola y lo registra en fichero de incidencias.
+#@param   str_logtype  tipo de registro de incidencias ("log", "command", "session")
+#@param   str_loglevel nivel de registro de incidencias ("info", "warning", "error")
+#@param   str_message  mensaje (puede recibir más de 1 parámetro.
+#@return  Mensaje mostrado.
+#*/
+## zero or more logtypes can be specified
+## zero or one loglevel can be specified
+## ogEcho ([],                 None,   msg)
+## ogEcho ('log',              None,   msg)
+## ogEcho ('session',          None,   msg)
+## ogEcho (['log', 'session'], None,   msg)
+## ogEcho ([], None,           'info', msg)
+## ogEcho ('log', None,        'info', msg)
+## ogEcho ('session', None,    'info', msg)
+## ogEcho (['log', 'session'], 'info', msg)
+def ogEcho (logtypes, loglevel, msg):
+    logfiles = []
+    if type (logtypes) is list:
+        for l in logtypes:
+            logfiles.append (_logtype2logfile (l))
+    else:   ## string
+        logfiles.append (_logtype2logfile (logtypes))
 
-    # Selección de ficheros de registro de incidencias.
-    while CONT:
-        arg = args.pop(0).lower()
-        if arg == "log":
-            LOGS += " " + OGLOGFILE
-        elif arg == "command":
-            LOGS += " " + OGLOGCOMMAND
-        elif arg == "session":
-            LOGS += " " + OGLOGSESSION
-        else:
-            CONT = 0
+    if loglevel is None or 'help' == loglevel:
+        for f in logfiles:
+            with open (f, 'a') as fd:
+                fd.write (msg + '\n')
+        return
 
-    # Selección del nivel de registro (opcional).
-    arg = args.pop(0).lower()
-    if arg == "help":
-        pass
-    elif arg == "info" or arg == "warning" or arg == "error":
-        LOGLEVEL = arg
+    if 'info' == loglevel or 'warning' == loglevel or 'error' == loglevel:
+        DATETIME = datetime.datetime.now(ZoneInfo(ogGlobals.TZ)).strftime("%F %T %Z")
+        if ogGlobals.DEBUG.lower() != "no":
+            logfiles.append (ogGlobals.OGLOGFILE)
 
-    if LOGLEVEL:
-        DATETIME = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
-        # Registrar mensajes en fichero de log si la depuración no está desactivada.
-        if DEBUG.lower() != "no":
-            LOGS += " " + OGLOGFILE
-        subprocess.call(f"logger -t OpenGnsys {LOGLEVEL} {DATETIME} {' '.join(args)}", shell=True)
+        for f in logfiles:
+            with open (f, 'a') as fd:
+                fd.write (f"OpenGnsys {loglevel} {DATETIME} {msg}\n")
     else:
-        print(' '.join(args))
+        raise Exception (f'unknown loglevel ({loglevel})')
 
 def ogExecAndLog(*args):
     # Variables locales
@@ -298,4 +313,4 @@ def ogIsVirtualMachine():
     if "KVM" in output or "VirtualBox" in output:
         return 1
     else:
-        return 0
\ No newline at end of file
+        return 0
diff --git a/client/lib/engine/bin/ogGlobals.py b/client/lib/engine/bin/ogGlobals.py
new file mode 100644
index 0000000..0f13431
--- /dev/null
+++ b/client/lib/engine/bin/ogGlobals.py
@@ -0,0 +1,11 @@
+#!/usr/bin/python3
+
+#OPENGNSYS='/opt/opengnsys'
+OPENGNSYS='/tmp/opengnsys'
+OGLOG=f'{OPENGNSYS}/log'
+OGLOGFILE=f'{OGLOG}/192.168.42.42'     ## TODO
+OGLOGCOMMAND='/tmp/command.log'
+OGLOGSESSION='/tmp/session.log'
+DEBUG='yes'
+
+TZ='Europe/Madrid'