diff --git a/README.md b/README.md
index 7e4a220..6112025 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,8 @@ Options:
   -f, --file      give ejs template file path.                  [string]
   -b, --base-dir  base directory that -f is relative to.        [string]  [default: "./"]
   -o, --out       file to write compiled.                       [string]
-  -O, --options   option variables (file path or JSON string).  [string]
+  -O, --options   option variables (file path or JSON string).  [string] (actually the 'data' parameter of EJS library)
+  -C, --config    config variables (file path or JSON string).  [string] (actually the 'options' parameter of EJS library)
 ```
 
 ### examples
@@ -40,6 +41,16 @@ ejs-cli --base-dir src/ "*.ejs" --out dest/
 # renders all of the files in src/ and outputs them to dest/
 ```
 
+```bash
+ejs-cli "myfile.ejs" --config "{\"delimiter\":\"$\"}" --options options.json
+# renders the "myfile.ejs" file with inline config (set the custom delimiter "$") and an options.json data file
+```
+
+```bash
+ejs-cli "myfile.ejs" --config config.json --options "{\"test\":\"123\"}"
+# renders the "myfile.ejs" file with config.json config file and inline data
+```
+
 ```bash
 cat example.ejs | ejs-cli example.ejs > example.html
 ```
diff --git a/index.js b/index.js
index 0f38b6f..e5f3d78 100644
--- a/index.js
+++ b/index.js
@@ -1 +1 @@
-module.exports = require('./lib/ejs-cli');
\ No newline at end of file
+module.exports = require('./lib/cli');
\ No newline at end of file
diff --git a/lib/cli.js b/lib/cli.js
index 7a21b61..2c7f911 100644
--- a/lib/cli.js
+++ b/lib/cli.js
@@ -13,29 +13,33 @@ var parseOptionsFile = require(__dirname + '/parseOptionsFile');
 
 (function () {
     var argv = optimist
-            .boolean('h')
-            .alias('h', 'help')
-            .default('h', false)
-            .describe('h', 'show this help.')
-
-            .string('f')
-            .alias('f', 'file')
-            .describe('f', 'give ejs template file path.')
+    .boolean('h')
+    .alias('h', 'help')
+    .default('h', false)
+    .describe('h', 'show this help.')
+
+    .string('f')
+    .alias('f', 'file')
+    .describe('f', 'give ejs template file path.')
     
-            .string('b')
-            .alias('b', 'base-dir')
-            .default('b', './')
-            .describe('b', 'base directory that -f is relative to.')
+    .string('b')
+    .alias('b', 'base-dir')
+    .default('b', './')
+    .describe('b', 'base directory that -f is relative to.')
 
-            .string('o')
-            .alias('o', 'out')
-            .describe('o', 'file to write compiled.')
+    .string('o')
+    .alias('o', 'out')
+    .describe('o', 'file to write compiled.')
 
-            .string('O')
-            .alias('O', 'options')
-            .describe('O', 'option variables (file path or JSON string).')
+    .string('O')
+    .alias('O', 'options')
+    .describe('O', 'option variables (file path or JSON string).')
 
-            .argv;
+    .string('C')
+    .alias('C', 'config')
+    .describe('C', 'config variables (file path or JSON string).')
+
+    .argv;
 
     if (argv.help) {
         optimist.showHelp();
@@ -82,61 +86,91 @@ var parseOptionsFile = require(__dirname + '/parseOptionsFile');
 
     var srcPaths = [];
     var options = {};
+    var config = {};
+
+    async.series([
+        function (next) {
+            // read config
+            if (!argv.config) {
+                log('config', 'none');
+                return next();
+            }
+
+            // read config
+            if (argv.config && fs.existsSync(argv.config)) {
+                log('config', '"' + argv.config + '"');
+                parseOptionsFile(argv.config, function (err, opts) {
+                    config = opts;
+                    next(err);
+                });
+                return;
+            }
+
+            log('config', argv.config);
 
-    async.series([function (next) {
-        // read options
-        if (!argv.options) {
-            log('opts', 'none');
+            try {
+                config = JSON.parse(argv.config);
+            } catch (e) {
+                return next(new Error('fail to parse config JSON.\n => ' + argv.config));
+            }
             return next();
-        }
 
-        if (fs.existsSync(argv.options)) {
-            log('opts', '"' + argv.options + '"');
-            parseOptionsFile(argv.options, function (err, opts) {
-                options = opts;
-                next(err);
-            });
-            return;
-        }
+        }, function (next) {
+            // read options
+            if (!argv.options) {
+                log('options', 'none');
+                return next();
+            }
 
-        log('options', argv.options);
-        try {
-            options = JSON.parse(argv.options);
-        } catch (e) {
-            return next(new Error('fail to parse options JSON.\n => ' + argv.options));
-        }
-        return next();
+            if (fs.existsSync(argv.options)) {
+                log('opts', '"' + argv.options + '"');
+                parseOptionsFile(argv.options, function (err, opts) {
+                    options = opts;
+                    next(err);
+                });
+                return;
+            }
 
-    }, function (next) {
-        glob(path.join(baseDir, srcGlob), function (err, array) {
-            if (err) {
-                return next(err);
+            log('options', argv.options);
+
+            try {
+                options = JSON.parse(argv.options);
+            } catch (e) {
+                return next(new Error('fail to parse options JSON.\n => ' + argv.options));
             }
-            srcPaths = array;
-            next();
-        });
-    }, function (next) {
-        if (!srcGlob) {
-            fetchStdio(function (err, src) {
-                var result = ejs.render(src, options);
-                writeCompiled(result, null, next);
-            });
-            return;
-        }
+            return next();
 
-        async.each(srcPaths, function (srcPath, done) {
-            ejs.renderFile(srcPath, options, function(err, result) {
+        }, function (next) {
+            glob(path.join(baseDir, srcGlob), function (err, array) {
                 if (err) {
-                    console.log(err);
-                } else {
-                    writeCompiled(result, srcPath, done); 
+                    return next(err);
                 }
+                srcPaths = array;
+                next();
             });
-        }, next);
-    }], function (err) {
-        if (err) {
-            console.error(err);
-        }
-        process.exit();
-    });
+        }, function (next) {
+            if (!srcGlob) {
+                fetchStdio(function (err, src) {
+                    var result = ejs.render(src, options, config);
+                    writeCompiled(result, null, next);
+                });
+                return;
+            }
+
+            async.each(srcPaths, function (srcPath, done) {
+                ejs.renderFile(srcPath, options, config, function(err, result) {
+                    if (err) {
+                        console.log(err);
+                    } else {
+                        writeCompiled(result, srcPath, done); 
+                    }
+                });
+            }, next);
+        }],
+        function (err) {
+            if (err) {
+                console.error(err);
+            }
+            process.exit();
+        });
 })();