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Run commands and manipulate files locally or over SSH using the same interface

Project description

To run echo locally:

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:

import spur

shell = spur.SshShell(hostname="localhost", username="bob", password="password1")
result = shell.run(["echo", "-n", "hello"])
print result.output # prints hello

Shell constructors

LocalShell

Takes no arguments:

spur.LocalShell()

SshShell

Requires a hostname and a username. Also requires some combination of a password and private key, as necessary to authenticate:

# 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"
)

Operations

run(command, cwd, update_env)

Run a command and wait for it to complete. The command is expected to be a list of strings.

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.

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.

Project details


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Source Distribution

spur-0.1.2.tar.gz (4.1 kB view hashes)

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