apt

apt-get

install a bunch of deps, cleanly

#!/bin/sh
pkgs=()
which htop >/dev/null || pkgs+=(htop)
which iftop >/dev/null || pkgs+=(iftop)
which mosh >/dev/null || pkgs+=(mosh)
which screen >/dev/null || pkgs+=(screen)
which tmux >/dev/null || pkgs+=(tmux)
which git >/dev/null || pkgs+=(git)
which jq >/dev/null || pkgs+=(jq)

if [ ! -z "${pkgs}" ]; then
  apt-get install -qq -y "${pkgs[@]}"
fi