dcblogs writes: IBM has released a new mainframe server that doesn't include its z/OS operating system. This Enterprise Linux Server line supports supports Red Hat or Suse. The system is packaged with mainframe management and virtualization tools. Its minimum processor configuration are two specialty mainframe processors designed for Linux. IBM wants to go after large multicore x86 Linux servers and believes the $212,000 entry price can do it. Link to Original Source
egrep patterns are full regular expressions; it uses a fast deterministic
algorithm that sometimes needs exponential space.
-- unix manuals