HostList Writer (v0.3): by James Dinan <dinan@cse.ohio-state.edu>
                Generate a host list suitable for input to MPI

Usage: create_hostlist.pl [flags] [node numbers]

Flags:
       -h      This Message
       -p str  Specify a hostname prefix (default: node)
       -s str  Specify a hostname suffix. eg: ".osu.edu" (default: None)
       -a str  Append the string str to each line (default: None)
       -i      Inline host list (eg "h1 h2..."), all on one line

Node Numbers:
       XX      Add node number XX to the list (eg: 1 2 3...)
      -XX      Remove node number XX to the list (eg: -2 -3...)
       XX-YY   Add nodes XX up to YY to the list (eg: 1-10)
      -XX-YY   Remove nodes XX up to YY to the list (eg: -1-10)

Hostlist Example:
       ./create_hostlist.pl -p node -s .osu.edu 1-10 -5 -2
          node1.osu.edu
          node3.osu.edu
          node4.osu.edu
          node6.osu.edu
          node7.osu.edu
          node8.osu.edu
          node9.osu.edu
          node10.osu.edu

Inline Example (eg: mpirun -np 16 $(create_hostlist...) ./par_app):
       ./create_hostlist.pl -i -p bm 1-10 -2
          bm1 bm3 bm4 bm5 bm6 bm7 bm8 bm9 bm10