diff --git a/README.md b/README.md
index 56e7bb83..a5128559 100644
--- a/README.md
+++ b/README.md
@@ -71,8 +71,8 @@ REPL-y 0.3.1
 ...
 ```
 
-If you are scary to blindly run changed command, there's `require_confirmation`
-[settings](#Settings) option:
+If you are scared to blindly run changed command, there's `require_confirmation`
+[settings](#settings) option:
 
 ```bash
 ➜ apt-get install vim
diff --git a/release.py b/release.py
new file mode 100755
index 00000000..e22209b6
--- /dev/null
+++ b/release.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+from subprocess import call
+import re
+
+
+version = None
+
+
+def get_new_setup_py_lines():
+    global version
+    with open('setup.py', 'r') as sf:
+        current_setup = sf.readlines()
+    for line in current_setup:
+        if line.startswith('VERSION = '):
+            major, minor = re.findall(r"VERSION = '(\d+)\.(\d+)'", line)[0]
+            version = "{}.{}".format(major, int(minor) + 1)
+            yield "VERSION = '{}'\n".format(version)
+        else:
+            yield line
+
+
+lines = list(get_new_setup_py_lines())
+with open('setup.py', 'w') as sf:
+    sf.writelines(lines)
+
+call('git pull', shell=True)
+call('git commit -am "Bump to {}"'.format(version), shell=True)
+call('git tag {}'.format(version), shell=True)
+call('git push', shell=True)
+call('git push --tags', shell=True)
+call('python setup.py sdist upload', shell=True)
diff --git a/setup.py b/setup.py
index a552b9d6..d19f72dc 100644
--- a/setup.py
+++ b/setup.py
@@ -1,14 +1,18 @@
 from setuptools import setup, find_packages
 
 
+VERSION = '1.26'
+
+
 setup(name='thefuck',
-      version="1.22",
+      version=VERSION,
       description="Magnificent app which corrects your previous console command",
       author='Vladimir Iakovlev',
       author_email='nvbn.rm@gmail.com',
       url='https://github.com/nvbn/thefuck',
       license='MIT',
-      packages=find_packages(exclude=['ez_setup', 'examples', 'tests']),
+      packages=find_packages(exclude=['ez_setup', 'examples',
+                                      'tests', 'release']),
       include_package_data=True,
       zip_safe=False,
       install_requires=['pathlib', 'psutil'],
diff --git a/tests/rules/test_cd_parent.py b/tests/rules/test_cd_parent.py
new file mode 100644
index 00000000..7a0fbc8b
--- /dev/null
+++ b/tests/rules/test_cd_parent.py
@@ -0,0 +1,12 @@
+from thefuck.main import Command
+from thefuck.rules.cd_parent import match, get_new_command
+
+
+def test_match():
+    assert match(Command('cd..', '', 'cd..: command not found'), None)
+    assert not match(Command('', '', ''), None)
+
+
+def test_get_new_command():
+    assert get_new_command(
+        Command('cd..', '', ''), None) == 'cd ..'
diff --git a/tests/rules/test_ssh_known_host.py b/tests/rules/test_ssh_known_host.py
new file mode 100644
index 00000000..9c8dc0d1
--- /dev/null
+++ b/tests/rules/test_ssh_known_host.py
@@ -0,0 +1,69 @@
+import os
+import pytest
+from mock import Mock
+from thefuck.main import Command
+from thefuck.rules.ssh_known_hosts import match, get_new_command, remove_offending_keys
+
+
+@pytest.fixture
+def ssh_error(tmpdir):
+    path = os.path.join(str(tmpdir), 'known_hosts')
+
+    def reset(path):
+        with open(path, 'w') as fh:
+            lines = [
+                '123.234.567.890 asdjkasjdakjsd\n'
+                '98.765.432.321 ejioweojwejrosj\n'
+                '111.222.333.444 qwepoiwqepoiss\n'
+            ]
+            fh.writelines(lines)
+
+    def known_hosts(path):
+        with open(path, 'r') as fh:
+            return fh.readlines()
+
+    reset(path)
+
+    errormsg = u"""@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
+@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
+IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
+Someone could be eavesdropping on you right now (man-in-the-middle attack)!
+It is also possible that a host key has just been changed.
+The fingerprint for the RSA key sent by the remote host is
+b6:cb:07:34:c0:a0:94:d3:0d:69:83:31:f4:c5:20:9b.
+Please contact your system administrator.
+Add correct host key in {0} to get rid of this message.
+Offending RSA key in {0}:2
+RSA host key for {1} has changed and you have requested strict checking.
+Host key verification failed.""".format(path, '98.765.432.321')
+
+    return errormsg, path, reset, known_hosts
+
+
+def test_match(ssh_error):
+    errormsg, _, _, _ = ssh_error
+    assert match(Command('ssh', '', errormsg), None)
+    assert match(Command('ssh', '', errormsg), None)
+    assert match(Command('scp something something', '', errormsg), None)
+    assert match(Command('scp something something', '', errormsg), None)
+    assert not match(Command('', '', errormsg), None)
+    assert not match(Command('notssh', '', errormsg), None)
+    assert not match(Command('ssh', '', ''), None)
+
+
+def test_remove_offending_keys(ssh_error):
+    errormsg, path, reset, known_hosts = ssh_error
+    command = Command('ssh user@host', '', errormsg)
+    remove_offending_keys(command, None)
+    expected = ['123.234.567.890 asdjkasjdakjsd\n', '111.222.333.444 qwepoiwqepoiss\n']
+    assert known_hosts(path) == expected
+
+
+def test_get_new_command(ssh_error, monkeypatch):
+    errormsg, _, _, _ = ssh_error
+
+    method = Mock()
+    monkeypatch.setattr('thefuck.rules.ssh_known_hosts.remove_offending_keys', method)
+    assert get_new_command(Command('ssh user@host', '', errormsg), None) == 'ssh user@host'
+    assert method.call_count
diff --git a/tests/rules/test_switch_lang.py b/tests/rules/test_switch_lang.py
index 363d6417..991f3983 100644
--- a/tests/rules/test_switch_lang.py
+++ b/tests/rules/test_switch_lang.py
@@ -7,8 +7,13 @@ from thefuck.rules import switch_lang
 def test_match():
     assert switch_lang.match(Mock(stderr='command not found: фзе-пуе',
                                   script=u'фзе-пуе'), None)
+    assert switch_lang.match(Mock(stderr='command not found: λσ',
+                                  script=u'λσ'), None)
+
     assert not switch_lang.match(Mock(stderr='command not found: pat-get',
                                       script=u'pat-get'), None)
+    assert not switch_lang.match(Mock(stderr='command not found: ls',
+                                      script=u'ls'), None)
     assert not switch_lang.match(Mock(stderr='some info',
                                       script=u'фзе-пуе'), None)
 
@@ -16,3 +21,5 @@ def test_match():
 def test_get_new_command():
     assert switch_lang.get_new_command(
         Mock(script=u'фзе-пуе штыефдд мшь'), None) == 'apt-get install vim'
+    assert switch_lang.get_new_command(
+        Mock(script=u'λσ -λα'), None) == 'ls -la'
diff --git a/tests/test_main.py b/tests/test_main.py
index f2c2843e..0345bc2e 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -24,7 +24,7 @@ def test_load_rule():
                return_value=Mock(
                    match=match,
                    get_new_command=get_new_command)) as load_source:
-        assert main.load_rule(Path('/rules/bash.py')) == main.Rule(match, get_new_command)
+        assert main.load_rule(Path('/rules/bash.py')) == main.Rule('bash', match, get_new_command)
         load_source.assert_called_once_with('bash', '/rules/bash.py')
 
 
@@ -35,14 +35,14 @@ def test_get_rules():
         glob.return_value = [PosixPath('bash.py'), PosixPath('lisp.py')]
         assert main.get_rules(
             Path('~'),
-            Mock(rules=None)) == [main.Rule('bash', 'bash'),
-                                  main.Rule('lisp', 'lisp'),
-                                  main.Rule('bash', 'bash'),
-                                  main.Rule('lisp', 'lisp')]
+            Mock(rules=None)) == [main.Rule('bash', 'bash', 'bash'),
+                                  main.Rule('lisp', 'lisp', 'lisp'),
+                                  main.Rule('bash', 'bash', 'bash'),
+                                  main.Rule('lisp', 'lisp', 'lisp')]
         assert main.get_rules(
             Path('~'),
-            Mock(rules=['bash'])) == [main.Rule('bash', 'bash'),
-                                      main.Rule('bash', 'bash')]
+            Mock(rules=['bash'])) == [main.Rule('bash', 'bash', 'bash'),
+                                      main.Rule('bash', 'bash', 'bash')]
 
 
 def test_get_command():
@@ -61,24 +61,28 @@ def test_get_command():
                                       stdout=PIPE,
                                       stderr=PIPE,
                                       env={'LANG': 'C'})
+        assert main.get_command(Mock(), ['']) is None
 
 
-def test_get_matched_rule():
-    rules = [main.Rule(lambda x, _: x.script == 'cd ..', None),
-             main.Rule(lambda *_: False, None)]
+def test_get_matched_rule(capsys):
+    rules = [main.Rule('', lambda x, _: x.script == 'cd ..', None),
+             main.Rule('', lambda *_: False, None),
+             main.Rule('rule', Mock(side_effect=OSError('Denied')), None)]
     assert main.get_matched_rule(main.Command('ls', '', ''),
                                  rules, None) is None
     assert main.get_matched_rule(main.Command('cd ..', '', ''),
                                  rules, None) == rules[0]
+    assert capsys.readouterr()[1].split('\n')[0]\
+           == '[WARN] rule: Traceback (most recent call last):'
 
 
 def test_run_rule(capsys):
     with patch('thefuck.main.confirm', return_value=True):
-        main.run_rule(main.Rule(None, lambda *_: 'new-command'),
+        main.run_rule(main.Rule('', None, lambda *_: 'new-command'),
                       None, None)
         assert capsys.readouterr() == ('new-command\n', '')
     with patch('thefuck.main.confirm', return_value=False):
-        main.run_rule(main.Rule(None, lambda *_: 'new-command'),
+        main.run_rule(main.Rule('', None, lambda *_: 'new-command'),
                       None, None)
         assert capsys.readouterr() == ('', '')
 
diff --git a/thefuck/main.py b/thefuck/main.py
index 626a1ef7..3c034d8f 100644
--- a/thefuck/main.py
+++ b/thefuck/main.py
@@ -5,11 +5,12 @@ from os.path import expanduser
 from subprocess import Popen, PIPE
 import os
 import sys
+from traceback import format_exception
 from psutil import Process, TimeoutExpired
 
 
 Command = namedtuple('Command', ('script', 'stdout', 'stderr'))
-Rule = namedtuple('Rule', ('match', 'get_new_command'))
+Rule = namedtuple('Rule', ('name', 'match', 'get_new_command'))
 
 
 def setup_user_dir():
@@ -43,7 +44,8 @@ def is_rule_enabled(settings, rule):
 def load_rule(rule):
     """Imports rule module and returns it."""
     rule_module = load_source(rule.name[:-3], str(rule))
-    return Rule(rule_module.match, rule_module.get_new_command)
+    return Rule(rule.name[:-3], rule_module.match,
+                rule_module.get_new_command)
 
 
 def get_rules(user_dir, settings):
@@ -80,6 +82,10 @@ def get_command(settings, args):
         script = ' '.join(arg.decode('utf-8') for arg in args[1:])
     else:
         script = ' '.join(args[1:])
+
+    if not script:
+        return
+
     result = Popen(script, shell=True, stdout=PIPE, stderr=PIPE,
                    env=dict(os.environ, LANG='C'))
     if wait_output(settings, result):
@@ -90,8 +96,12 @@ def get_command(settings, args):
 def get_matched_rule(command, rules, settings):
     """Returns first matched rule for command."""
     for rule in rules:
-        if rule.match(command, settings):
-            return rule
+        try:
+            if rule.match(command, settings):
+                return rule
+        except Exception:
+            sys.stderr.write(u'[WARN] {}: {}---------------------\n\n'.format(
+                rule.name, ''.join(format_exception(*sys.exc_info()))))
 
 
 def confirm(new_command, settings):
diff --git a/thefuck/rules/ssh_known_hosts.py b/thefuck/rules/ssh_known_hosts.py
new file mode 100644
index 00000000..ab73c422
--- /dev/null
+++ b/thefuck/rules/ssh_known_hosts.py
@@ -0,0 +1,37 @@
+import re
+
+patterns = [
+    r'WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!',
+    r'WARNING: POSSIBLE DNS SPOOFING DETECTED!',
+    r"Warning: the \S+ host key for '([^']+)' differs from the key for the IP address '([^']+)'",
+]
+offending_pattern = re.compile(
+    r'(?:Offending (?:key for IP|\S+ key)|Matching host key) in ([^:]+):(\d+)',
+    re.MULTILINE)
+
+commands = ['ssh', 'scp']
+
+
+def match(command, settings):
+    if not command.script:
+        return False
+    if not command.script.split()[0] in commands:
+        return False
+    if not any([re.findall(pattern, command.stderr) for pattern in patterns]):
+        return False
+    return True
+
+
+def remove_offending_keys(command, settings):
+    offending = offending_pattern.findall(command.stderr)
+    for filepath, lineno in offending:
+        with open(filepath, 'r') as fh:
+            lines = fh.readlines()
+            del lines[int(lineno) - 1]
+        with open(filepath, 'w') as fh:
+            fh.writelines(lines)
+
+
+def get_new_command(command, settings):
+    remove_offending_keys(command, settings)
+    return command.script
diff --git a/thefuck/rules/sudo.py b/thefuck/rules/sudo.py
index 476ae212..39604acc 100644
--- a/thefuck/rules/sudo.py
+++ b/thefuck/rules/sudo.py
@@ -4,6 +4,7 @@ patterns = ['permission denied',
             'you cannot perform this operation unless you are root',
             'non-root users cannot',
             'Operation not permitted',
+            'root privilege',
             'This command has to be run under the root user.']
 
 
diff --git a/thefuck/rules/switch_lang.py b/thefuck/rules/switch_lang.py
index 572c772c..af427208 100644
--- a/thefuck/rules/switch_lang.py
+++ b/thefuck/rules/switch_lang.py
@@ -3,7 +3,8 @@
 target_layout = '''qwertyuiop[]asdfghjkl;'zxcvbnm,./QWERTYUIOP{}ASDFGHJKL:"ZXCVBNM<>?'''
 
 source_layouts = [u'''йцукенгшщзхъфывапролджэячсмитьбю.ЙЦУКЕНГШЩЗХЪФЫВАПРОЛДЖЭЯЧСМИТЬБЮ,''',
-                  u'''ضصثقفغعهخحجچشسیبلاتنمکگظطزرذدپو./ًٌٍَُِّْ][}{ؤئيإأآة»«:؛كٓژٰ‌ٔء><؟''']
+                  u'''ضصثقفغعهخحجچشسیبلاتنمکگظطزرذدپو./ًٌٍَُِّْ][}{ؤئيإأآة»«:؛كٓژٰ‌ٔء><؟''',
+                  u''';ςερτυθιοπ[]ασδφγηξκλ΄ζχψωβνμ,./:΅ΕΡΤΥΘΙΟΠ{}ΑΣΔΦΓΗΞΚΛ¨"ΖΧΨΩΒΝΜ<>?''']
 
 
 def _get_matched_layout(command):