Sys.getlocale
. Consulted at startup.
makeindex
.
If unset to a value determined when R was built.
Used by the emulation mode of texi2dvi
and
texi2pdf
.
R CMD BATCH
. Most often set to
""
, so test by something like
!is.na(Sys.getenv("R_BATCH", NA))
.
options("browser")
.
FALSE
,
command-line completion is not used. (Not used by OS X GUI.)
options
.
dev2bitmap
, bitmap
and
embedFonts
. Consulted when those functions are
invoked. Since it will be treated as if passed to
system
, spaces and shell metacharacters should be escaped.
readline
command-line interface it takes effect
when the history is saved (by savehistory
or at the
end of a session).
windows
For Rgui
it controls the number of lines saved to the
history file: the size of the history used in the session is
controlled by the console customization: see Rconsole
.
R.home
. Set by R.
.libPaths
.
.libPaths
.
.libPaths
.
options("papersize")
, e.g.\ifelse{latex}{\out{~}}{ } used by
pdf
and postscript
.
R CMD Rd2pdf
.
cpu-vendor-os
, see R.Version
.
pdflatex
processing of
Rd
files. Used by R CMD Rd2pdf
.
texi2dvi
.
Defaults to the value of TEXI2DVI, and if that is unset to a
value determined when R was built.
unix
Consulted at startup to set the default for
options("texi2dvi")
, used by
texi2dvi
and texi2pdf
in package tools.
unzip
. Sets the
initial value for options("unzip")
on a Unix-alike
when namespace utils is loaded.
zip
. Used by
zip
and by R CMD INSTALL --build
on Windows.
tempdir
. TMPDIR is also used by some of the
utilities see the help for build
.
Sys.timezone
for the system-specific
formats. Consulted as needed.
download.file
:
see its help for further details.
Sys.getenv
and Sys.setenv
to read and set
environmental variables in an R session. gctorture
for environment variables controlling garbage
collection.