R: Collect Information About the Current R Session

sessionInfo {utils}

R Documentation

Collect Information About the Current R Session

Description

Get and report version information about R, the OS and attached or loaded packages.

The print() and toLatex() methods (for a "sessionInfo" object) show the locale and timezone information by default, when locale or tzone are true. The system.codepage is only shown when it is not empty, i.e., only on Windows, and if it differs from code.page, see below or l10n_info().

Usage

sessionInfo(package = NULL)
## S3 method for class 'sessionInfo'
print(x, locale = TRUE, tzone = locale,
      RNG = !identical(x$RNGkind, .RNGdefaults), ...)
## S3 method for class 'sessionInfo'
toLatex(object, locale = TRUE, tzone = locale,
        RNG = !identical(object$RNGkind, .RNGdefaults), ...)
osVersion

Arguments

`package`	a character vector naming installed packages, or `NULL` (the default) meaning all attached packages.
`x`	an object of class `"sessionInfo"`.
`object`	an object of class `"sessionInfo"`.
`locale`	show locale, by default `tzone`, and (on Windows) code page information?
`tzone`	show time zone information?
`RNG`	show information on `RNGkind()`? Defaults to true iff it differs from the R version's default, i.e., `RNGversion(*)`.
`...`	currently not used.

Value

sessionInfo() returns an object of class "sessionInfo" which has print and toLatex methods. This is a list with components

`R.version`	a list, the result of calling `R.Version()`.
`platform`	a character string describing the platform R was built under. Where sub-architectures are in use this is of the form ‘⁠platform/sub-arch⁠’: 32-bit builds have `(32-bit)` appended
`running`	a character string (or possibly `NULL`), the same as `osVersion`, see below.
`RNGkind`	a character vector, the result of calling `RNGkind()`.
`matprod`	a character string, the result of calling `getOption("matprod")`.
`BLAS`	a character string, the result of calling `extSoftVersion()["BLAS"]`.
`LAPACK`	a character string, the result of calling `La_library()`.
`LA_version`	a character string, the result of calling `La_version()`.
`locale`	a character string, the result of calling `Sys.getlocale()`.
`tzone`	a character string, the result of calling `Sys.timezone()`.
`tzcode_type`	a character string indicating source (system/internal) of the date-time conversion and printing functions.
`basePkgs`	a character vector of base packages which are attached.
`otherPkgs`	(not always present): a named list of the results of calling `packageDescription` on other attached packages.
`loadedOnly`	(not always present): a named list of the results of calling `packageDescription` on packages whose namespaces are loaded but are not attached.

`osVersion`

osVersion is a character string (or possibly NULL on bizarre platforms) describing the OS and version which it is running under (as distinct from built under). This attempts to name a Linux distribution and give the OS name on an Apple Mac.

It is the same as sessionInfo()$running and created when loading the utils package.

Windows may report unexpected versions: see the help for win.version.

How OSes identify themselves and their versions can be arcane: where possible osVersion (and hence sessionInfo()$running) uses a human-readable form.

Where R was compiled under macOS 10.x (as the CRAN Intel distributions were prior to R 4.3.0) but running under ‘Big Sur’ or later, macOS reports itself as ‘⁠10.16⁠’ (which R recognizes as ‘Big Sur ...’) and not ‘⁠11⁠’, ‘⁠12⁠’, ....

Note

The information on ‘loaded’ packages and namespaces is the current version installed at the location the package was loaded from: it can be wrong if another process has been changing packages during the session.

Examples


sI <- sessionInfo()
sI
# The same, showing the RNGkind, but not the locale :
  print(sI, RNG = TRUE, locale = FALSE)
toLatex(sI, locale = FALSE) # shortest; possibly desirable at end of report

[Package utils version 4.4.1 Index]