Termux is an Android terminal emulator and Linux environment app that works directly with no rooting or setup required. A minimal base system is installed automatically - additional packages are available using the APT package manager. Termux combines standard packages with accurate terminal emulation in a beautiful open-source solution. Access API endpoints with curl and use rsync to store backups of your contact list on a remote server.
Fast Websites: Powerful CMS for Apache written in C++
Debian Packages can be downloaded from https://launchpad.net/~snapcpp -- you can find instructions there on how to add the PPA to your sources on your Ubuntu system and just use apt-get install / upgrade as required.