--- a/autoupdate.services/libsrc/org/netbeans/updater/ModuleUpdater.java	Fri Mar 13 12:31:32 2009 +0100
+++ a/autoupdate.services/libsrc/org/netbeans/updater/ModuleUpdater.java	Fri Mar 13 15:38:46 2009 +0300
@@ -42,6 +42,7 @@ 
 package org.netbeans.updater;
 
 import java.io.*;
+import java.lang.reflect.Method;
 import java.util.*;
 import java.util.jar.*;
 
@@ -97,6 +98,8 @@ 
     
     public static final String UPDATER_JAR = "updater.jar"; // NOI18N
     public static final String AUTOUPDATE_UPDATER_JAR_PATH = "netbeans/modules/ext/" + UPDATER_JAR; // NOI18N
+
+    public static final String EXECUTABLE_FILES_ENTRY = "Info/executable.list";
     
     /** files that are supposed to be installed (when running inside the ide) */
     private Collection<File> forInstall;
@@ -354,6 +357,7 @@ 
                 try {
                     jarFile = new JarFile (nbm);
                     Enumeration entries = jarFile.entries();
+                    List <String> executableFiles = readExecutableFilesList(jarFile);
                     while( entries.hasMoreElements() ) {
                         JarEntry entry = (JarEntry) entries.nextElement();
                         checkStop();
@@ -383,6 +387,9 @@ 
                                     destFile.getParentFile ().mkdirs ();
                                 }
                                 bytesRead = copyStreams( jarFile.getInputStream( entry ), new FileOutputStream( destFile ), bytesRead );
+                                if(executableFiles.contains(pathTo)) {
+                                    chmod(destFile);
+                                }
                                 UpdaterFrame.setProgressValue( bytesRead );
                             }
                         } else if ( entry.getName().startsWith( UPDATE_MAIN_DIR )&&
@@ -455,7 +462,74 @@ 
             t.deleteUnusedFiles ();            
         }
     }
-    
+
+    private List<String> readExecutableFilesList(JarFile jarFile) {
+        List<String> list = new ArrayList();
+        JarEntry executableFilesEntry = jarFile.getJarEntry(EXECUTABLE_FILES_ENTRY);
+        if (executableFilesEntry != null) {
+            BufferedInputStream bis = null;
+            try {
+                bis = new BufferedInputStream(jarFile.getInputStream(executableFilesEntry));
+                byte[] buffer = new byte[8192];
+                int c = 0;
+                StringBuilder sb = new StringBuilder();
+                while ((c = bis.read(buffer)) != -1) {
+                    sb.append(new String(buffer, 0, c));
+                }
+                String[] lines = sb.toString().trim().split("(?:\r\n|\n|\r)");
+                for (String s : lines) {
+                    if (s.trim().length() > 0) {
+                        list.add(s);
+                    }
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            } finally {
+                if (bis != null) {
+                    try {
+                        bis.close();
+                    } catch (IOException e) {
+                    }
+                }
+            }
+        }
+        return list;
+    }
+
+    private void chmod(File executableFile) {
+        if(isWindows()) {
+            return;
+        }
+        if (System.getProperty("java.version").startsWith("1.5")) {
+            // Find chmod
+            File chmod = new File("/bin/chmod"); // NOI18N
+            if (!chmod.isFile()) {
+                chmod = new File("/usr/bin/chmod"); // NOI18N
+            }
+            if (chmod.isFile()) {
+                Process process = null;
+                try {
+                    process = new ProcessBuilder(chmod.getAbsolutePath(), "a+x", executableFile.getAbsolutePath()).start();
+                    process.waitFor();
+                } catch (Exception e) {
+                    e.printStackTrace();
+                } finally {
+                    if (process != null) {
+                        process.destroy();
+                    }
+                }
+            }
+        } else {
+            // Determine if java.io.File.setExecutable method is supported
+            try {
+                Method setExecutableMethod = File.class.getMethod("setExecutable", Boolean.TYPE, Boolean.TYPE);
+                setExecutableMethod.invoke(executableFile, true, false);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
     public static boolean trickyDeleteOnWindows(File destFile) {
         assert isWindows() : "Call it only on Windows but system is " + System.getProperty("os.name");
         File f = new File(destFile.getParentFile(), destFile.getName());