title: Save large numeric output to file natively in Julia 1.0.0
body: <p>I am trying to run a program in hpc-cluster. Unfortunately, I am unable to install external packages (e.g., JLD2) on the cluster. This is is a temporary problem, and should get fixed.</p>
  
  <p>I don't want to wait around all that time and I am wondering if there is any way to save large output (2-3 GB) in Julia without external dependencies. Most of the output is matrix of numbers. I was using JLD2 previously that stores data in HDF5 format.</p>
  
  <p>Bonus question: Is there a workaround to this using shell commands, like use pipe to get the output and use awk//grep to save data? (something like <code>julia -p 12 main.jl | echo "file"</code>).</p>