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@ -45,15 +45,24 @@ There are few commands you should know about
* `ansible-galaxy` (to install roles from github/galaxy)
* and other!
Example of usage - `shell`
#### Module - program (usaly python) that execute, do some work and return proper output :)
This program perform specialized task/action (like manage instances in the cloud, execute shell command).
The simplest module is called `ping` - it just returns a JSON with `pong` message.
Example of modules:
* Module: `ping` - the simplest module that is usefull to verify host connectivity
* Module: `shell` - a module that executes shell command on a specified host(s).
Example of usage - `ping`, `shell`
```bash
$ ansible -m ping
$ ansible -m shell -a 'date; whoami' localhost #hostname_or_a_group_name
```
The module `command` allows to execute a single command. It will not be processed through the shell, so variables like $HOME and operations like "<", ">", "|", ";" and "&" will not work. Use shell :)
* Module: `command` - executes a single command that will not be processed through the shell, so variables like $HOME will not work
We should also mention a module `raw` that sometimes can save the day.
```bash
$ ansible -m command -a 'date; whoami' # FAILURE
@ -62,14 +71,8 @@ $ ansible -m command -a 'date'
$ ansible -m command -a 'whoami'
```
#### Module - program (usaly python) that execute, do some work and return proper output :)
This program perform specialized task/action (like manage instances in the cloud, execute shell command).
The simplest module is called `ping` - it just returns a JSON with `pong` message.
Example of modules:
Module: `shell` - a module that executes shell command on a specified host(s).
Module: `file` - performs file operations (stat, link, dir, ...)
* Module: `file` - performs file operations (stat, link, dir, ...)
* Module: `raw` - executes a low-down and dirty SSH command, not going through the module subsystem (usefull to install python2.7)
```yaml