Jeroen Ooms (2013). The RAppArmor Package: Enforcing
Security Policies in {R} Using Dynamic Sandboxing on
Linux. Journal of Statistical Software, 55(7),
1-34. http://www.jstatsoft.org/v55/i07/. Ubuntu Manpage: _SC_NPROCESSORS_ONLN
- The
number of processors currently online (available).
http://manpages.ubuntu.com/manpages/precise/man3/sysconf.3.html.