diff --git a/osc/commandline.py b/osc/commandline.py
index 10b1cc7f..5b0af620 100755
--- a/osc/commandline.py
+++ b/osc/commandline.py
@@ -167,11 +167,40 @@ See the examples in the _link file.
         dst_package = src_package
 
     if src_project == dst_project and src_package == dst_package:
-        print 'error: source and destination are the same'
-        sys.exit(1)
+        sys.exit('osc: error: source and destination are the same')
     link_pac(src_project, src_package, dst_project, dst_package)
 
 
+def copypac(args):
+    """"Copy" a package, possibly cross-project.
+
+usage: osc copypac SOURCEPRJ SOURCEPAC DESTPRJ [DESTPAC]
+
+The DESTPAC name is optional; the source packages' name will be used if
+DESTPAC is omitted.
+
+    """
+
+    if not args or len(args) < 3:
+        print 'missing argument'
+        print
+        print copypac.func_doc
+        sys.exit(1)
+
+
+    src_project = args[0]
+    src_package = args[1]
+    dst_project = args[2]
+    if len(args) > 3:
+        dst_package = args[3]
+    else:
+        dst_package = src_package
+
+    if src_project == dst_project and src_package == dst_package:
+        sys.exit('osc: error: source and destination are the same')
+    copy_pac(src_project, src_package, dst_project, dst_package)
+
+
 def deletepac(args):
     """deletepac: Delete a package on the server.
 
@@ -327,6 +356,9 @@ usage: osc add file1 file2 ...
         for filename in pac.todo:
             if filename in exclude_stuff:
                 continue
+            if filename in pac.filenamelist:
+                print 'osc: warning: \'%s\' is already under version control' % filename
+                continue
 
             pac.addfile(filename)
             print statfrmt('A', filename)
@@ -347,6 +379,8 @@ usage: osc addremove
         for filename in p.todo:
             if filename in exclude_stuff:
                 continue
+            if os.path.isdir(filename):
+                continue
             state = p.status(filename)
             if state == '?':
                 p.addfile(filename)
@@ -848,6 +882,7 @@ cmd_dict = {
     diff:           ['diff'],
     editmeta:       ['editmeta'],
     editpac:        ['editpac', 'createpac'],
+    copypac:        ['copypac'],
     editprj:        ['editprj', 'createprj'],
     help:           ['help'],
     buildhistory:   ['buildhistory', 'buildhist'],
diff --git a/osc/core.py b/osc/core.py
index 36263850..00ca6db9 100755
--- a/osc/core.py
+++ b/osc/core.py
@@ -1060,6 +1060,45 @@ def link_pac(src_project, src_package, dst_project, dst_package):
     print 'Done.'
 
 
+def copy_pac(src_project, src_package, dst_project, dst_package):
+    """
+    create a copy of a package
+    """
+
+    import othermethods
+    import tempfile
+
+    src_meta = show_package_meta(src_project, src_package)
+
+    # replace project and package name
+    # using a string buffer
+    # and create the package
+    tree = ET.parse(StringIO(''.join(src_meta)))
+    root = tree.getroot()
+    root.set('name', dst_package)
+    root.set('project', dst_project)
+    buf = StringIO()
+    tree.write(buf)
+    src_meta = buf.getvalue()
+
+    print 'Sending meta data...'
+    u = makeurl(['source', dst_project, dst_package, '_meta'])
+    othermethods.putfile(u, username, password, strbuf=src_meta)
+
+    # copy one file after the other
+    print 'Copying files...'
+    tmpdir = tempfile.mkdtemp(prefix='osc_copypac', dir = '/tmp')
+    os.chdir(tmpdir)
+    for n in meta_get_filelist(src_project, src_package):
+        print '  ', n
+        get_source_file(src_project, src_package, n, targetfilename=n)
+        u = makeurl(['source', dst_project, dst_package, pathname2url(n)])
+        othermethods.putfile(u, username, password, file = n)
+        os.unlink(n)
+    print 'Done.'
+    os.rmdir(tmpdir)
+
+
 def delete_package(prj, pac):
     import othermethods