expect - Executes a command and responds to prompts.¶
New in version 2.0.
Synopsis¶
- The
expect
module executes a command and responds to prompts. - The given command will be executed on all selected nodes. It will not be processed through the shell, so variables like
$HOME
and operations like"<"
,">"
,"|"
, and"&"
will not work.
Requirements¶
The below requirements are needed on the host that executes this module.
- python >= 2.6
- pexpect >= 3.3
Parameters¶
Parameter | Choices/Defaults | Comments |
---|---|---|
chdir |
Change into this directory before running the command.
|
|
command
required |
The command module takes command to run.
|
|
creates |
A filename, when it already exists, this step will not be run.
|
|
echo |
Default: no
|
Whether or not to echo out your response strings.
|
removes |
A filename, when it does not exist, this step will not be run.
|
|
responses
required |
Mapping of expected string/regex and string to respond with. If the response is a list, successive matches return successive responses. List functionality is new in 2.1.
|
|
timeout |
Default: 30
|
Amount of time in seconds to wait for the expected strings. Use
null to disable timeout. |
Notes¶
Note
- If you want to run a command through the shell (say you are using
<
,>
,|
, etc), you must specify a shell in the command such as/bin/bash -c "/path/to/something | grep else"
. - The question, or key, under responses is a python regex match. Case insensitive searches are indicated with a prefix of
?i
. - By default, if a question is encountered multiple times, its string response will be repeated. If you need different responses for successive question matches, instead of a string response, use a list of strings as the response. The list functionality is new in 2.1.
- The expect module is designed for simple scenarios. For more complex needs, consider the use of expect code with the shell or script modules. (An example is part of the shell module documentation)
Examples¶
- name: Case insensitive password string match
expect:
command: passwd username
responses:
(?i)password: "MySekretPa$$word"
# you don't want to show passwords in your logs
no_log: true
- name: Generic question with multiple different responses
expect:
command: /path/to/custom/command
responses:
Question:
- response1
- response2
- response3
Status¶
This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.
Maintenance¶
This module is flagged as community which means that it is maintained by the Ansible Community. See Module Maintenance & Support for more info.
For a list of other modules that are also maintained by the Ansible Community, see here.
Author¶
- Matt Martz (@sivel)
Hint
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