sessionInfoX function

Extended Information About the Current R Session

Collect (and print) information about the current session and environment, using sessionInfo() and more mostly low-level and platform dependent information.

isRshared() is a utility called from sessionInfoX().

sessionInfoX(pkgs = NULL, list.libP = FALSE, extraR.env = TRUE)

## S3 method for class 'sessionInfoX'
print(x, locale = TRUE, RLIBS = TRUE, Renv = TRUE, ...)

isRshared(platform = .Platform)

Arguments

• pkgs: NULL (default), TRUE or a character vector of package names, whose packageDescription()s are wanted. No packages by default, TRUE takes all currently loaded pkgs.

• list.libP: a logical indicating if for all .libPaths entries, the files should be listed via list.files.

• extraR.env: logical indicating if all environment variables should be recorded which start with "R_" or "_R_".

• x: typically the result of sessionInfoX().

• locale: logical, passed to print.sessionInfo()

  indicating if the locale information should be printed.

• RLIBS: logical indicating if the information about R_LIBS should be printed.

• Renv: logical indicating if the information about R environment variables should be printed.

• ...: passed to print methods.

• platform: a list like .Platform.

Returns

For isRshared(), a logical indicating if has been installed as shared , i.e., linked to libR* shared library.

For sessionInfoX(), an object of S3 class "sessionInfoX", a list

with components (there may be more, experimental and not yet listed here): - sInfo: simply the value of sessionInfo().

• sysInf: the value of Sys.info().

• capabilities: the value of capabilities().

• Machine: the value of .Machine.

• compiledBy: for 4.3.0 and newer, the value of R_compiled_by().

• extSoft: for 3.2.0 and newer, the value of extSoftVersion().

• grSoft: for 3.2.0 and newer, the value of grSoftVersion().

• tclVersion: for 3.2.0 and newer and when tcltk is loaded, the Tcl version (tclVersion()).

• LAPACK: for 3.0.3 and newer, the value of La_version().

• pcre: for 3.1.3 and newer, the value of pcre_config().

• pkgDescr: If pkgs was non-empty, a named list of packageDescription()s for each entry in pkgs.

• libPath: the value of .libPaths().

• RLIBS: a character vector of entries from Sys.getenv("R_LIBS"), typically very similar to the libPaths component.

• n.RLIBS: simply a normalizePath()ed version of RLIBS.

• R.env: a named character vector with the important

  environment variables R_ENVIRON, R_PROFILE, R_CHECK_ENVIRON.

• xR.env: if extraR.env was true, a named character vector of all R related environment variables, as specified in extraR.env's description above.

• shared: (not available on Windows, where it is conceptually always true:) logical indicating if the version of is shared .

Author(s)

Martin Maechler, December 2015 ff.

See Also

sessionInfo, .libPaths, R.version, Sys.getenv.

Examples

six0 <- sessionInfoX()
six0$shared # useful (for some, e.g., MM) on Unix alikes

sixN <- sessionInfoX("nlme", list.libP = TRUE)
sixN # -> print() method for "sessionInfoX"
names(sixN)
str(sixN, max = 1)# outline of lower-level structure
str(sixN$pkgDescr) # list with one component "nlme"