http://linuxcommand.org/lc3_adv_tput.php https://www.gnu.org/software/termutils/manual/termutils-2.0/html_chapter/tput_1.html https://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
https://developer.xively.com/docs/pub-and-sub-with-mosquitto-1 https://mosquitto.org/download/ linux https://mosquitto.org/files/source/mosquitto-1.5.5.tar.gz windows http://eclipse.c3sl.ufpr.br/mosquitto/binary/win64/mosquitto-1.5.4-install-windows-x64.exe
https://www.shellscript.sh/trap.html https://rimuhosting.com/knowledgebase/linux/misc/trapping-ctrl-c-in-bash
https://stackoverflow.com/questions/5472507/how-do-i-output-a-text-table-in-perl