[rrdharan]

You probably also want to chmod +s htop, or it won't actually show you CPU/memory stats.

[hprotagonist]

and if you want to use `sed` not `gsed`, do `brew install --default-names coreutils` to supercede the OS provided utilities.

[lobster_johnson]

Or you can add it to your PATH:

    PATH=/usr/local/opt/coreutils/libexec/gnubin:$PATH

"gnubin" contains the all utilities with the original names.