```r
print(sessionInfo(), locale = FALSE)
```

```
## R version 2.15.2 (2012-10-26)
## Platform: x86_64-redhat-linux-gnu (64-bit)
## 
## attached base packages:
## [1] stats     graphics  grDevices utils     datasets  methods   base     
## 
## other attached packages:
## [1] knitr_1.2
## 
## loaded via a namespace (and not attached):
## [1] codetools_0.2-8 digest_0.6.3    evaluate_0.4.3  formatR_0.8    
## [5] stringr_0.6.2   tools_2.15.2
```