Package 'RcppGetconf'

Title: 'Rcpp' Interface for Querying System Configuration Variables
Description: The 'getconf' command-line tool provided by 'libc' allows querying of a large number of system variables. This package provides similar functionality.
Authors: Dirk Eddelbuettel
Maintainer: Dirk Eddelbuettel <[email protected]>
License: GPL (>= 2)
Version: 0.0.3.1
Built: 2024-06-26 21:24:46 UTC
Source: https://github.com/eddelbuettel/rcppgetconf

Help Index


Return all System Configuration Settings

Description

Retrieve all configuration settings

Usage

getAll(path = ".")

Arguments

path

An optional character object specifying a path. Default is the current directory.

Details

This functions returns all configuration settings which can be queried in a data.frame object. The system-level functions sysconf, pathconf and confstr provide all the underlying information.

Value

A data.frame with three colums for key, value and (source) type. Not all keys return a value; in those cases an empty string is returned. Type is one of path, sys and conf and signals how the value was obtained.

Author(s)

Dirk Eddelbuettel

See Also

getConfig

Examples

if (Sys.info()[["sysname"]] != "SunOS") {
    head(getAll(), 30)
    subset(getAll(), type=="path")
}

Return a System Configuration Setting

Description

Retrieve one configuration setting

Usage

getConfig(var, path = ".")

Arguments

var

An character object specifying a value for which configuration is queried.

path

An optional character object specifying a path. Default is the current directory.

Details

This functions returns the configuration setting for a given input. in a data.frame object. The system-level functions sysconf, pathconf and confstr provide the underlying information.

Value

A result value corresponding to the requested setting. The return type can be either integer for a numeric value, character for text or NULL in case to value could be retrieved.

Author(s)

Dirk Eddelbuettel

See Also

getAll

Examples

if (Sys.info()[["sysname"]] != "SunOS") {
    getConfig("_NPROCESSORS_CONF")   # number of processor
    getConfig("LEVEL1_ICACHE_SIZE")  # leve1 cache size
    getConfig("GNU_LIBC_VERSION")    # libc version
}