Java Module jdk.security.auth Package com.sun.security.auth.module Class UnixSystem（JDK11）

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java.lang.Object
- com.sun.security.auth.module.UnixSystem

```
public class UnixSystem
extends Object
```
This class implementation retrieves and makes available Unix UID/GID/groups information for the current user.

Field Summary

Fields
Modifier and Type	Field	Description
`protected long`	`gid`
`protected long[]`	`groups`
`protected long`	`uid`
`protected String`	`username`

Constructor Summary

Constructors
Constructor	Description
`UnixSystem()`	Instantiate a `UnixSystem` and load the native library to access the underlying system information.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`getGid()`	Get the GID for the current Unix user.
`long[]`	`getGroups()`	Get the supplementary groups for the current Unix user.
`long`	`getUid()`	Get the UID for the current Unix user.
`String`	`getUsername()`	Get the username for the current Unix user.

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - username
```
protected String username
```
  - uid
```
protected long uid
```
  - gid
```
protected long gid
```
  - groups
```
protected long[] groups
```
- Constructor Detail
  - UnixSystem
```
public UnixSystem()
```
    Instantiate a UnixSystem and load the native library to access the underlying system information.
- Method Detail
  - getUsername
```
public String getUsername()
```
    Get the username for the current Unix user.
    
    Returns:
    
    the username for the current Unix user.
  - getUid
```
public long getUid()
```
    Get the UID for the current Unix user.
    
    Returns:
    
    the UID for the current Unix user.
  - getGid
```
public long getGid()
```
    Get the GID for the current Unix user.
    
    Returns:
    
    the GID for the current Unix user.
  - getGroups
```
public long[] getGroups()
```
    Get the supplementary groups for the current Unix user.
    
    Returns:
    
    the supplementary groups for the current Unix user.

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