| NAnt  Help  Task Reference  <sysinfo> | v0.85 | 
Sets properties with system information.
Sets a number of properties with information about the system environment. The intent of this task is for nightly build logs to have a record of system information so that the build was performed on.
| Property | Value | 
|---|---|
| < prefix>.clr.version | Common Language Runtime version number. | 
| < prefix>.env.* | Environment variables (e.g., < prefix>.env.PATH). | 
| < prefix>.os.platform | Operating system platform ID. | 
| < prefix>.os.version | Operating system version. | 
| < prefix>.os | Operating system version string. | 
| < prefix>.os.folder.applicationdata | The directory that serves as a common repository for application-specific data for the current roaming user. | 
| < prefix>.os.folder.commonapplicationdata | The directory that serves as a common repository for application-specific data that is used by all users. | 
| < prefix>.os.folder.commonprogramfiles | The directory for components that are shared across applications. | 
| < prefix>.os.folder.desktopdirectory | The directory used to physically store file objects on the desktop. Do not confuse this directory with the desktop folder itself, which is a virtual folder. | 
| < prefix>.os.folder.programfiles | The Program Files directory. | 
| < prefix>.os.folder.system | The System directory. | 
| < prefix>.os.folder.temp | The temporary directory. | 
 When the name of an environment variable is not a valid property name, the task will fail. In that case, set failonerror to true to allow that environment variable to be skipped. 
Note: we advise you to use the following functions instead:
| Function | Description | 
|---|---|
| environment::get-operating-system() | Gets a OperatingSystem object that identifies this operating system. | 
| environment::get-folder-path() | Gets the path to a system special folder. | 
| environment::get-variable() | Returns the value of a environment variable. | 
| path::get-temp-path() | Gets the path to the temporary directory. | 
| environment::get-version() | Gets the Common Language Runtime version. | 
| Attribute | Type | Description | Required | 
|---|---|---|---|
| prefix | string | The string to prefix the property names with. The default is "sys.". | False | 
| failonerror | bool | Determines if task failure stops the build, or is just reported. The default is true. | False | 
| if | bool | If true then the task will be executed; otherwise, skipped. The default is true. | False | 
| unless | bool | Opposite of if. If false then the task will be executed; otherwise, skipped. The default is false. | False | 
| verbose | bool | Determines whether the task should report detailed build log messages. The default is false. | False | 
Register the properties with the default property prefix.
<sysinfo />
    
      Register the properties without a prefix.
<sysinfo prefix="" />
    
      Register properties and display a summary.
<sysinfo verbose="true" />