Which version of R is running in my computer?

Question

There are two R directories on my computer:
one is /home/R-2.15.2,the other is /home/R-2.15.1,
when I input R , I can start R, now I want to know which R is running: 2.15.1 or 2.15.2?

When you start R, a bunch of text should appear. That text should include the version number — David Robinson, Apr 13 '13 at 01:06

score 73 · Answer 1 · edited Aug 13 '22 at 11:38

73

05/20/2021 Update:

In the R terminal, type R.version.

~~In addition to @Piotr Jaszkowski, R.Version() should do the work as well~~

edited Aug 13 '22 at 11:38

Nav

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answered Apr 13 '13 at 01:06

yujingz

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It's `R.version`. – Hahnemann Feb 20 '19 at 18:34

Piotr Jaszkowski · Accepted Answer · 2013-04-13T01:13:06.257

39

Run R --version there's info about version on the first line.

Edit: If you ask this question then I bet that R is not running from any of these directories. Check $PATH env variable to get information where binaries are looked for and in which order.

Edit 2: Use type shell command to find where binary for given command is stored, -a for all paths, -f for the hashed one (basically: most recently used).

edited Apr 13 '13 at 01:13

answered Apr 13 '13 at 01:06

Piotr Jaszkowski

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smci · Answer 3 · 2019-03-20T00:42:24.773

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The builtin version will show this.

> version
               _                            
platform       x86_64-apple-darwin9.8.0     
...
version.string R version 2.15.2 (2012-10-26)

version is a named list with 14 items, really you just want to see:

> version[['version.string']]
               _                            
[1] "R version 2.15.2 (2012-10-26)"

and in fact if you only want the version-string:

> strsplit(version[['version.string']], ' ')[[1]][3]
[1] "2.15.2"

Type builtins() to see all the builtins.

POSTSCRIPT: turns out version and R.version (mentioned by nathaninmac) are aliases for the same thing.

edited Mar 20 '19 at 00:42

answered Apr 13 '13 at 01:12

smci

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It might appear simple, but its output is a 14-part formatted string... – smci Jan 12 '18 at 08:18
Following nathaninmac's answer, `paste(version[c("major", "minor")], collapse = ".")` is another way to get the version string `2.15.2` – Josiah Yoder Jul 01 '21 at 16:01

score 10 · Answer 4 · answered Apr 13 '13 at 06:23

10

Try sessionInfo()

Next to the R version it also returns the versions of the loaded packages and more.

http://stat.ethz.ch/R-manual/R-patched/library/utils/html/sessionInfo.html

answered Apr 13 '13 at 06:23

Jonas Tundo

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score 7 · Answer 5 · answered Jun 25 '19 at 06:52

7

This will do the trick as well

paste0(R.Version()[c("major","minor")], collapse = ".")

answered Jun 25 '19 at 06:52

samssan

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or paste0(R.version$major,".",R.version$minor) – Ferroao Aug 05 '19 at 02:31

score 1 · Answer 6 · answered Apr 13 '13 at 09:04

You can type 'which R' to which R binary gets used

or type R and see something like below, that should tell you which version.

score 0 · Answer 7 · answered Jun 26 '23 at 12:56

Nobody listed getRversion() so far, which has the advantage that you can make comparisons with its return value. For example:

getRversion()
#> [1] '4.3.0'
getRversion() >= "4.3.0"
#> [1] TRUE

checkmate::assert_true(getRversion() >= "4.3.0")
checkmate::assert_true(getRversion() >= "4.3.1")
#> Error in eval(expr, envir, enclos): Assertion on 'getRversion() >= "4.3.1"' failed: Must be TRUE.

^{Created on 2023-06-26 with reprex v2.0.2}

Which version of R is running in my computer?

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