---
name: "AppConfig::Sys"
section: "3pm"
platform: "linux"
package: "perl-appconfig"
version: "1.71-15"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/AppConfig::Sys"
---

# AppConfig::Sys(3pm)

Perl5 module defining platform-specific information and methods for other AppConfig::\* modules.

## NAME

AppConfig::Sys - Perl5 module defining platform-specific information and methods for other AppConfig::\* modules.

## SYNOPSIS

```
    use AppConfig::Sys;
    my $sys = AppConfig::Sys->new();
    @fields = $sys->getpwuid($userid);
    @fields = $sys->getpwnam($username);
```

## OVERVIEW

AppConfig::Sys is a Perl5 module provides platform-specific information and operations as required by other AppConfig::\* modules.

AppConfig::Sys is distributed as part of the AppConfig bundle.

## DESCRIPTION

### USING THE AppConfig::Sys MODULE

To import and use the AppConfig::Sys module the following line should appear in your Perl script:

```
     use AppConfig::Sys;
```

AppConfig::Sys is implemented using object-oriented methods.  A new AppConfig::Sys object is created and initialised using the AppConfig::Sys-\>**new()** method.  This returns a reference to a new AppConfig::Sys object.

```
    my $sys = AppConfig::Sys->new();
```

This will attempt to detect your operating system and create a reference to a new AppConfig::Sys object that is applicable to your platform.  You may  explicitly specify an operating system name to override this automatic  detection:

```
    $unix_sys = AppConfig::Sys->new("Unix");
```

Alternatively, the package variable `$AppConfig::Sys::OS` can be set to an operating system name.  The valid operating system names are: Win32, VMS, Mac, OS2 and Unix.  They are not case-specific.

### AppConfig::Sys METHODS

AppConfig::Sys defines the following methods:

- **getpwnam()**

  Calls the system function **getpwnam()** if available and returns the result. Returns undef if not available.  The **can\_getpwnam()** method can be called to determine if this function is available.

- **getpwuid()**

  Calls the system function **getpwuid()** if available and returns the result. Returns undef if not available.  The **can\_getpwuid()** method can be called to determine if this function is available.

## AUTHOR

Andy Wardley, \<abw@wardley.org\>

## COPYRIGHT

Copyright (C) 1997-2007 Andy Wardley.  All Rights Reserved.

Copyright (C) 1997,1998 Canon Research Centre Europe Ltd.

This module is free software; you can redistribute it and/or modify it under  the term of the Perl Artistic License.

## SEE ALSO

AppConfig, AppConfig::File