diff --git a/src/fr/devinsy/statoolinfos/cli/StatoolInfosCLI.java b/src/fr/devinsy/statoolinfos/cli/StatoolInfosCLI.java
index 4e0df43..0ac7fef 100644
--- a/src/fr/devinsy/statoolinfos/cli/StatoolInfosCLI.java
+++ b/src/fr/devinsy/statoolinfos/cli/StatoolInfosCLI.java
@@ -119,7 +119,7 @@ public final class StatoolInfosCLI
         message.appendln("    statoolinfos list file                   <logfilesorconfigfile>  display http access log files");
         message.appendln("    statoolinfos list log      [-bot|-nobot] <logfilesorconfigfile>  display http access log lines");
         message.appendln("    statoolinfos list ip       [-bot|-nobot] <logfiles>              generate ip list from http log file");
-        message.appendln("    statoolinfos list ua       [-bot|-nobot] <logfiles>              generate user agent list from http log file");
+        message.appendln("    statoolinfos list ua       [-bot|-nobot] <logfilesorconfigfile>  generate user agent list from http log file");
         message.appendln("    statoolinfos list visitor  [-bot|-nobot] <logfiles>              generate visitors (ip+ua) list from http log file");
         message.appendln("    statoolinfos stat ip       [-bot|-nobot] <logfiles>              generate stats about ip from http log file");
         message.appendln("    statoolinfos stat ua       [-bot|-nobot] <logfiles>              generate stats about user agent from http log file");
@@ -384,6 +384,19 @@ public final class StatoolInfosCLI
 
             StatoolInfos.listLogs(source, BotFilter.ALL);
         }
+        else if (CLIUtils.isMatching(args, "list", "(useragent|ua)", "(-all|-bot|-nobot)", ".+\\.conf*"))
+        {
+            BotFilter filter = parseLogFilterOption(args[2]);
+            File configurationFile = new File(StringUtils.trim(args[3]));
+
+            StatoolInfos.listUserAgents(configurationFile, filter);
+        }
+        else if (CLIUtils.isMatching(args, "list", "(useragent|ua)", ".+\\.conf"))
+        {
+            File configurationFile = new File(StringUtils.trim(args[2]));
+
+            StatoolInfos.listUserAgents(configurationFile, BotFilter.ALL);
+        }
         else if (CLIUtils.isMatchingEllipsis(args, "list", "(useragent|ua)", "(-all|-bot|-nobot)", ".+"))
         {
             BotFilter filter = parseLogFilterOption(args[2]);
diff --git a/src/fr/devinsy/statoolinfos/core/StatoolInfos.java b/src/fr/devinsy/statoolinfos/core/StatoolInfos.java
index a1e1c41..812d49f 100644
--- a/src/fr/devinsy/statoolinfos/core/StatoolInfos.java
+++ b/src/fr/devinsy/statoolinfos/core/StatoolInfos.java
@@ -358,6 +358,66 @@ public class StatoolInfos
         }
     }
 
+    /**
+     * List user agents.
+     *
+     * @param configurationFile
+     *            the configuration file
+     * @param filter
+     *            the filter
+     */
+    public static void listUserAgents(final File configurationFile, final BotFilter filter)
+    {
+        try
+        {
+            if ((configurationFile == null) || (!configurationFile.exists()))
+            {
+                System.out.println("No configuration file found.");
+            }
+            else
+            {
+                System.out.println("Testing HttpAccesLog lines from [" + configurationFile.toString() + "]");
+                Configuration configuration = Factory.loadConfiguration(configurationFile);
+
+                logger.info("== Testing HttpAccessLog lines.");
+                String source = configuration.getProbeHttpAccessLogSource();
+                String dateTimePattern = configuration.getProbeHttpAccessLogDateTimePattern();
+                String pattern = configuration.getProbeHttpAccessLogPattern();
+                String pathFilter = configuration.getProbeHttpAccessLogPathFilter();
+                logger.info("source=[{}]", source);
+                logger.info("pattern=[{}]", pattern);
+                logger.info("dateTimePattern=[{}]", dateTimePattern);
+                logger.info("pathFilter=[{}]", pathFilter);
+
+                Chrono chrono = new Chrono().start();
+                UserAgentStator stator = new UserAgentStator();
+                HttpAccessLogs logs = new HttpAccessLogs(FilesUtils.searchByWildcard(source), pattern, dateTimePattern, pathFilter);
+
+                for (HttpAccessLog log : logs)
+                {
+                    if (filter.matches(log))
+                    {
+                        stator.putLog(log);
+                    }
+                }
+
+                for (UserAgentStat stat : stator.getUserAgentStats().sortByLabel())
+                {
+                    System.out.println(stat.getUserAgent());
+                }
+
+                System.err.println(String.format("%s %10d", "UserAgent count: ", stator.getUserAgentStats().size()));
+                System.err.println(String.format("%s %10d", "Log count:       ", stator.getLogCount()));
+                System.err.println(chrono.format());
+            }
+        }
+        catch (Exception exception)
+        {
+            logger.error("Error: {}", exception.getMessage());
+            exception.printStackTrace();
+        }
+    }
+
     /**
      * List user agents.
      *