diff --git a/pom.xml b/pom.xml
index 26abf17..0c5b944 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,6 +54,11 @@
             <artifactId>poi-ooxml</artifactId>
             <version>3.17</version>
         </dependency>
+        <dependency>
+            <groupId>net.sf.jopt-simple</groupId>
+            <artifactId>jopt-simple</artifactId>
+            <version>6.0-alpha-2</version>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/ru/dmitriymx/corrector1s/Main.java b/src/main/java/ru/dmitriymx/corrector1s/Main.java
index 652446f..7652696 100644
--- a/src/main/java/ru/dmitriymx/corrector1s/Main.java
+++ b/src/main/java/ru/dmitriymx/corrector1s/Main.java
@@ -1,26 +1,78 @@
 package ru.dmitriymx.corrector1s;
 
+import joptsimple.OptionParser;
+import joptsimple.OptionSet;
 import lombok.extern.slf4j.Slf4j;
 import ru.dmitriymx.corrector1s.gui.MainApp;
 
 import java.io.File;
+import java.nio.file.Files;
+import java.util.Arrays;
 import java.util.List;
 
 @Slf4j
 public class Main {
+    public static final String VERSION = "1.0";
+
+    private static OptionParser buildOptionParser() {
+        final OptionParser optionParser = new OptionParser();
+
+        optionParser.acceptsAll(Arrays.asList("s", "source"), "Source Excel file")
+                .withRequiredArg()
+                .ofType(File.class)
+                .required();
+        optionParser.acceptsAll(Arrays.asList("t", "target"), "Target Excel file (default: target = source)")
+                .withRequiredArg()
+                .ofType(File.class);
+        optionParser.acceptsAll(Arrays.asList("f", "fee"), "Honorarium (in percentages)")
+                .withRequiredArg()
+                .ofType(Double.class)
+                .defaultsTo(9.0d);
+        optionParser.acceptsAll(Arrays.asList("h", "help"), "Help page. Display this message")
+                .forHelp();
+        optionParser.acceptsAll(Arrays.asList("v", "version"), "Version")
+                .forHelp();
+
+        return optionParser;
+    }
+
     public static void main(String[] args) throws Exception {
         if (args.length == 0) {
             MainApp.main(args);
         } else {
-            File file = new File(args[0]);
-            File file1 = new File(args[1]);
+            OptionParser parser = buildOptionParser();
+            OptionSet optionSet;
+            try {
+                optionSet = parser.parse(args);
+            } catch (joptsimple.OptionException e) {
+                if (e.getMessage().contains("Missing")) {
+                    log.error(e.getMessage());
+                } else {
+                    log.error("", e);
+                }
+                return;
+            }
 
-            ExcelReader excelReader = new ExcelReader(file);
-            List<ExcelReader.ExcelRecord> data = excelReader.getData();
-            excelReader.correctStyle();
-            excelReader.correctData(data);
-            excelReader.insertNewCols();
-            excelReader.save(file1);
+            if (optionSet.has("help")) {
+                System.out.printf("Version: %s\n", VERSION);
+                parser.printHelpOn(System.out);
+                return;
+            } else if (optionSet.has("version")) {
+                System.out.printf("Version: %s\n", VERSION);
+                return;
+            }
+
+            File sourceFile, targetFile;
+            sourceFile = (File) optionSet.valueOf("source");
+            if (optionSet.has("target")) {
+                targetFile = (File) optionSet.valueOf("target");
+            } else {
+                targetFile = sourceFile;
+            }
+
+            log.debug("Source file: {} (exists: {})", sourceFile.getAbsolutePath(), Files.exists(sourceFile.toPath()));
+            log.debug("Target file: {}", targetFile.getAbsolutePath());
+            log.debug("Honorarium: {}%", optionSet.valueOf("fee"));
         }
     }
 }