#N/A: Add chmod +x rule

README.md

@@ -144,6 +144,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `cd_correction` – spellchecks and correct failed cd commands;
 * `cd_mkdir` – creates directories before cd'ing into them;
 * `cd_parent` – changes `cd..` to `cd ..`;
+* `chmod_x` – add execution bit;
 * `composer_not_command` – fixes composer command name;
 * `cp_omitting_directory` – adds `-a` when you `cp` directory;
 * `cpp11` – adds missing `-std=c++11` to `g++` or `clang++`;

tests/rules/test_chmod_x.py

@@ -0,0 +1,39 @@
+import pytest
+from tests.utils import Command
+from thefuck.rules.chmod_x import match, get_new_command
+
+
+@pytest.fixture
+def file_exists(mocker):
+    return mocker.patch('os.path.exists', return_value=True)
+
+
+@pytest.fixture
+def file_access(mocker):
+    return mocker.patch('os.access', return_value=False)
+
+
+@pytest.mark.usefixtures('file_exists', 'file_access')
+@pytest.mark.parametrize('script, stderr', [
+    ('./gradlew build', 'gradlew: Permission denied'),
+    ('./install.sh --help', 'install.sh: permission denied')])
+def test_match(script, stderr):
+    assert match(Command(script, stderr=stderr))
+
+
+@pytest.mark.parametrize('script, stderr, exists, callable', [
+    ('./gradlew build', 'gradlew: Permission denied', True, True),
+    ('./gradlew build', 'gradlew: Permission denied', False, False),
+    ('./gradlew build', 'gradlew: error', True, False),
+    ('gradlew build', 'gradlew: Permission denied', True, False)])
+def test_not_match(file_exists, file_access, script, stderr, exists, callable):
+    file_exists.return_value = exists
+    file_access.return_value = callable
+    assert not match(Command(script, stderr=stderr))
+
+
+@pytest.mark.parametrize('script, result', [
+    ('./gradlew build', 'chmod +x gradlew && ./gradlew build'),
+    ('./install.sh --help', 'chmod +x install.sh && ./install.sh --help')])
+def test_get_new_command(script, result):
+    assert get_new_command(Command(script)) == result

thefuck/rules/chmod_x.py

@@ -0,0 +1,15 @@
+import os
+from thefuck.shells import shell
+
+
+def match(command):
+    return (command.script.startswith('./')
+            and 'permission denied' in command.stderr.lower()
+            and os.path.exists(command.script_parts[0])
+            and not os.access(command.script_parts[0], os.X_OK))
+
+
+def get_new_command(command):
+    return shell.and_(
+        'chmod +x {}'.format(command.script_parts[0][2:]),
+        command.script)