Unlike many modern software packages, Gaussian does not use a package manager (like apt or yum ). It is installed via a tarball archive.
g16 < input.com > output.log
Then execute with:
0 1 O 0.000000 0.000000 0.000000 H 0.758602 0.000000 0.504284 H -0.758602 0.000000 0.504284 gaussian 16 linux
This yields incredible I/O speeds but consumes physical RAM. Unlike many modern software packages, Gaussian does not