How to check the amount of RAM

I want to make a function that imports data in different numbers of batches depending on how much RAM is available on someone's system. But h开发者_开发问答ow can I find the amount of available RAM in R? I can use memory.size() but that only works for Windows.

Given the warnings concerning platform-dependency discussed in the earlier comment, you could for example parse /proc/meminfo on Linux:

$ grep MemFree /proc/meminfo 
MemFree:          573660 kB
$ awk '/MemFree/ {print $2}' /proc/meminfo 
565464

You could try the second approach via system(..., intern=TRUE), or even via a pipe connection.

Edit some 5+ years later: In R, and just following what the previous paragraph hinted at:

R> memfree <- as.numeric(system("awk '/MemFree/ {print $2}' /proc/meminfo", 
+                               intern=TRUE))
R> memfree
[1] 3342480
R> 

I would recommend using memuse::Sys.meminfo().

Now you can do that with benchmarkme::get_ram function.

https://cran.r-project.org/web/packages/benchmarkme/benchmarkme.pdf