/usr/lib/python2.7/dist-packages/spur-0.3.17.egg-info/PKG-INFO is in python-spur 0.3.17-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 | Metadata-Version: 1.1
Name: spur
Version: 0.3.17
Summary: Run commands and manipulate files locally or over SSH using the same interface
Home-page: http://github.com/mwilliamson/spur.py
Author: Michael Williamson
Author-email: mike@zwobble.org
License: UNKNOWN
Description: spur.py: Run commands and manipulate files locally or over SSH using the same interface
=======================================================================================
To run echo locally:
.. code-block:: python
import spur
shell = spur.LocalShell()
result = shell.run(["echo", "-n", "hello"])
print(result.output) # prints hello
Executing the same command over SSH uses the same interface -- the only
difference is how the shell is created:
.. code-block:: python
import spur
shell = spur.SshShell(hostname="localhost", username="bob", password="password1")
with shell:
result = shell.run(["echo", "-n", "hello"])
print(result.output) # prints hello
Installation
------------
``$ pip install spur``
Shell constructors
------------------
LocalShell
~~~~~~~~~~
Takes no arguments:
.. code-block:: sh
spur.LocalShell()
SshShell
~~~~~~~~
Requires a hostname. Also requires some combination of a username,
password and private key, as necessary to authenticate:
.. code-block:: python
# Use a password
spur.SshShell(
hostname="localhost",
username="bob",
password="password1"
)
# Use a private key
spur.SshShell(
hostname="localhost",
username="bob",
private_key_file="path/to/private.key"
)
# Use a port other than 22
spur.SshShell(
hostname="localhost",
port=50022,
username="bob",
password="password1"
)
Optional arguments:
* ``connect_timeout`` -- a timeout in seconds for establishing an SSH
connection. Defaults to 60 (one minute).
* ``missing_host_key`` -- by default, an error is raised when a host
key is missing. One of the following values can be used to change the
behaviour when a host key is missing:
- ``spur.ssh.MissingHostKey.raise_error`` -- raise an error
- ``spur.ssh.MissingHostKey.warn`` -- accept the host key and log a
warning
- ``spur.ssh.MissingHostKey.accept`` -- accept the host key
* ``shell_type`` -- the type of shell used by the host. Defaults to
``spur.ssh.ShellTypes.sh``, which should be appropriate for most Linux
distributions. If the host uses a different shell, such as simpler shells
often found on embedded systems, try changing ``shell_type`` to a more
appropriate value, such as ``spur.ssh.ShellTypes.minimal``. The following
shell types are currently supported:
- ``spur.ssh.ShellTypes.sh`` -- the Bourne shell. Supports all features.
- ``spur.ssh.ShellTypes.minimal`` -- a minimal shell. Several features
are unsupported:
- Non-existent commands will not raise ``spur.NoSuchCommandError``.
- The following arguments to ``spawn`` and ``run`` are unsupported unless
set to their default values:
``cwd``, ``update_env``, and ``store_pid``.
* ``look_for_private_keys`` -- by default, Spur will search for discoverable
private key files in ``~/.ssh/``.
Set to ``False`` to disable this behaviour.
* ``load_system_host_keys`` -- by default, Spur will attempt to read host keys
from the user's known hosts file, as used by OpenSSH, and no exception will
be raised if the file can't be read.
Set to ``False`` to disable this behaviour.
Shell interface
---------------
run(command, cwd, update\_env, store\_pid, allow\_error, stdout, stderr, encoding)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Run a command and wait for it to complete. The command is expected to be
a list of strings. Returns an instance of ``ExecutionResult``.
.. code-block:: python
result = shell.run(["echo", "-n", "hello"])
print(result.output) # prints hello
Note that arguments are passed without any shell expansion. For
instance, ``shell.run(["echo", "$PATH"])`` will print the literal string
``$PATH`` rather than the value of the environment variable ``$PATH``.
Raises ``spur.NoSuchCommandError`` if trying to execute a non-existent
command.
Optional arguments:
* ``cwd`` -- change the current directory to this value before
executing the command.
* ``update_env`` -- a ``dict`` containing environment variables to be
set before running the command. If there's an existing environment
variable with the same name, it will be overwritten. Otherwise, it is
unchanged.
* ``store_pid`` -- if set to ``True`` when calling ``spawn``, store the
process id of the spawned process as the attribute ``pid`` on the
returned process object. Has no effect when calling ``run``.
* ``allow_error`` -- ``False`` by default. If ``False``, an exception
is raised if the return code of the command is anything but 0. If
``True``, a result is returned irrespective of return code.
* ``stdout`` -- if not ``None``, anything the command prints to
standard output during its execution will also be written to
``stdout`` using ``stdout.write``.
* ``stderr`` -- if not ``None``, anything the command prints to
standard error during its execution will also be written to
``stderr`` using ``stderr.write``.
* ``encoding`` -- if set, this is used to decode any output.
By default, any output is treated as raw bytes.
If set, the raw bytes are decoded before writing to
the passed ``stdout`` and ``stderr`` arguments (if set)
and before setting the output attributes on the result.
``shell.run(*args, **kwargs)`` should behave similarly to
``shell.spawn(*args, **kwargs).wait_for_result()``
spawn(command, cwd, update\_env, store\_pid, allow\_error, stdout, stderr, encoding)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Behaves the same as ``run`` except that ``spawn`` immediately returns an
object representing the running process.
Raises ``spur.NoSuchCommandError`` if trying to execute a non-existent
command.
open(path, mode="r")
~~~~~~~~~~~~~~~~~~~~
Open the file at ``path``. Returns a file-like object.
By default, files are opened in text mode.
Appending `"b"` to the mode will open the file in binary mode.
For instance, to copy a binary file over SSH,
assuming you already have an instance of ``SshShell``:
.. code-block:: python
with ssh_shell.open("/path/to/remote", "rb") as remote_file:
with open("/path/to/local", "wb") as local_file:
shutil.copyfileobj(remote_file, local_file)
Process interface
-----------------
Returned by calls to ``shell.spawn``. Has the following attributes:
* ``pid`` -- the process ID of the process. Only available if
``store_pid`` was set to ``True`` when calling ``spawn``.
Has the following methods:
* ``is_running()`` -- return ``True`` if the process is still running,
``False`` otherwise.
* ``stdin_write(value)`` -- write ``value`` to the standard input of
the process.
* ``wait_for_result()`` -- wait for the process to exit, and then
return an instance of ``ExecutionResult``. Will raise
``RunProcessError`` if the return code is not zero and
``shell.spawn`` was not called with ``allow_error=True``.
* ``send_signal(signal)`` -- sends the process the signal ``signal``.
Only available if ``store_pid`` was set to ``True`` when calling
``spawn``.
Classes
-------
ExecutionResult
~~~~~~~~~~~~~~~
``ExecutionResult`` has the following properties:
* ``return_code`` -- the return code of the command
* ``output`` -- a string containing the result of capturing stdout
* ``stderr_output`` -- a string containing the result of capturing
stdout
It also has the following methods:
* ``to_error()`` -- return the corresponding RunProcessError. This is
useful if you want to conditionally raise RunProcessError, for
instance:
.. code-block:: python
result = shell.run(["some-command"], allow_error=True)
if result.return_code > 4:
raise result.to_error()
RunProcessError
~~~~~~~~~~~~~~~
A subclass of ``RuntimeError`` with the same properties as
``ExecutionResult``:
* ``return_code`` -- the return code of the command
* ``output`` -- a string containing the result of capturing stdout
* ``stderr_output`` -- a string containing the result of capturing
stdout
NoSuchCommandError
~~~~~~~~~~~~~~~~~~
``NoSuchCommandError`` has the following properties:
* ``command`` -- the command that could not be found
API stability
-------------
Using the the terminology from `Semantic
Versioning <http://semver.org/spec/v1.0.0.html>`_, if the version of
spur is X.Y.Z, then X is the major version, Y is the minor version, and
Z is the patch version.
While the major version is 0, incrementing the patch version indicates a
backwards compatible change. For instance, if you're using 0.3.1, then
it should be safe to upgrade to 0.3.2.
Incrementing the minor version indicates a change in the API. This means
that any code using previous minor versions of spur may need updating
before it can use the current minor version.
Undocumented features
~~~~~~~~~~~~~~~~~~~~~
Some features are undocumented, and should be considered experimental.
Use them at your own risk. They may not behave correctly, and their
behaviour and interface may change at any time.
Troubleshooting
---------------
I get the error "Connection refused" when trying to connect to a virtual machine using a forwarded port on ``localhost``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Try using ``"127.0.0.1"`` instead of ``"localhost"`` as the hostname.
I get the error "Connection refused" when trying to execute commands over SSH
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Try connecting to the machine using SSH on the command line with the
same settings. For instance, if you're using the code:
.. code-block:: python
shell = spur.SshShell(
hostname="remote",
port=2222,
username="bob",
private_key_file="/home/bob/.ssh/id_rsa"
)
with shell:
result = shell.run(["echo", "hello"])
Try running:
.. code-block:: sh
ssh bob@remote -p 2222 -i /home/bob/.ssh/id_rsa
If the ``ssh`` command succeeds, make sure that the arguments to
``ssh.SshShell`` and the ``ssh`` command are the same. If any of the
arguments to ``ssh.SshShell`` are dynamically generated, try hard-coding
them to make sure they're set to the values you expect.
I can't spawn or run commands over SSH
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you're having trouble spawning or running commands over SSH, try passing
``shell_type=spur.ssh.ShellTypes.minimal`` as an argument to ``spur.SshShell``.
For instance:
.. code-block:: python
import spur
import spur.ssh
spur.SshShell(
hostname="localhost",
username="bob",
password="password1",
shell_type=spur.ssh.ShellTypes.minimal,
)
This makes minimal assumptions about the features that the host shell supports,
and is especially well-suited to minimal shells found on embedded systems. If
the host shell is more fully-featured but only works with
``spur.ssh.ShellTypes.minimal``, feel free to submit an issue.
Why don't shell features such as variables and redirection work?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Commands are run directly rather than through a shell.
If you want to use any shell features such as variables and redirection,
then you'll need to run those commands within an appropriate shell.
For instance:
.. code-block:: python
shell.run(["sh", "-c", "echo $PATH"])
shell.run(["sh", "-c", "ls | grep bananas"])
Keywords: ssh shell subprocess process
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.2
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Topic :: Internet
|