This script installs and configures a few applications and services - in particular it sets up gnu screen and conky in a way to provide a nice bottom line complete with tabs for the open windows and some information about system health

setupscreenconkx.sh

#!/bin/bash
######################################################################
# This script sets up gnu screen and conky in a way to provide a nice
# footer line complete with tabs for the open windows and some 
# information about the systems health 
# (https://elbosso.github.io/gnu_screen_sitzung_wenig_aufgepeppt.html#content)
#
# If run as sudo (or root) it tries to install gnu screen and conky
# (needed) and joe (my own preference) before writing a customized
# version of .screenrc and a customized version of a conky config.
#
# Additionally, if run as sudo or root it tries to install ntpd, 
# backing up and rewriting the config, adding a NTP server. Which server
# this is can be customized via setting the environment variable NTP_SERVER.
# If this variable is not set, the default (192.168.10.2) is used.
# For example, the script could be called like this:
# sudo NTP_SERVER=mail.klausen.dk /bin/bash setupscreenconkx.sh
# After rewriting the configuration, ntpd is restarted.
# 
# Furthermore, telegraf - the plugin-driven server agent for 
# collecting & reporting metrics - is installed along with a basic 
# configuration and restarted so that this configuration is active.
######################################################################
if [[ "$EUID" -eq 0 ]]
then
        apt-get update && apt-get -y install joe screen conky ntp telegraf
	if grep "server.*prefer" /etc/ntp.conf
	then
	    # code if found
	    echo "not doing anything with /etc/ntp.conf"
	else
	    # code if not found
	    echo "Writing NTP config backup to /etc/ntp_$(date -d "today" +"%Y%m%d%H%M")"
            cp /etc/ntp.conf "/etc/ntp_$(date -d "today" +"%Y%m%d%H%M")"
            sed -i "/^.*Specify one or more NTP servers.*/aserver ${NTP_SERVER:-192.168.10.2} prefer" /etc/ntp.conf
            service ntp restart
	fi

        echo "Writing telegraf config backup to /etc/telegraf/telegraf_$(date -d "today" +"%Y%m%d%H%M")"
        cp /etc/telegraf/telegraf.conf "/etc/telegraf/telegraf_$(date -d "today" +"%Y%m%d%H%M")"
        telegraf --output-filter influxdb --input-filter net:cpu:mem:disk:diskio:system:processes:temp:sensors --aggregator-filter none --processor-filter none config >/etc/telegraf/telegraf.conf
	sed -i 's/interval = "10s"/interval = "1m"/g' /etc/telegraf/telegraf.conf
	sed -i 's/# database = "telegraf"/database = "monitoring"/g' /etc/telegraf/telegraf.conf
	sed -i 's|# urls = \["http\://127.0.0.1\:8086"\]|urls = \["http\://192.168.10.2\:8086"\]|g' /etc/telegraf/telegraf.conf
	service telegraf restart
fi

if [ -f "/home/${SUDO_USER:-$USER}/.screenrc" ]
then
        echo "/home/${SUDO_USER:-$USER}/.screenrc already exists - not touching it!"
else
echo "writing /home/${SUDO_USER:-$USER}/.screenrc"
cat <<EOF >"/home/${SUDO_USER:-$USER}"/.screenrc
#idle 10 lockscreen
autodetach on # Autodetach session on hangup instead of terminating screen completely

startup_message off # Turn off the splash screen

hardstatus on
backtick 1 5 5 conky -c /home/${SUDO_USER:-$USER}/.conkyinscreen
#hardstatus alwayslastline "%{.kc}%-w%{.kw}%n*%t%{-}%+w%=%1\`"
caption always           "%{=u Kc}  %=%1\`"
hardstatus alwayslastline "%{= kc} %-Lw%{=b Kc} %n%f %t %{-}%+Lw %=%{= dd}"
#hardstatus alwayslastline "%{bw}[%H] [%?%-Lw%?%{wb}%n*%f %t%{bw}%?%+Lw%?]%=%{bw}"
EOF
if [[ "$EUID" -eq 0 ]]
then
        chown "${SUDO_USER:-$USER}" "/home/${SUDO_USER:-$USER}"/.screenrc
fi

fi
if [ -f "/home/${SUDO_USER:-$USER}/.conkyinscreen" ]
then
        echo "/home/${SUDO_USER:-$USER}/.conkyinscreen already exists - not touching it!"
else
echo "writing /home/${SUDO_USER:-$USER}/.conkyinscreen"
cat <<EOF >"/home/${SUDO_USER:-$USER}"/.conkyinscreen
out_to_x no
out_to_console yes
total_run_times 1
TEXT
| \$nodename_short |free (/home):\${fs_free /home}|\$loadavg|free mem:\$memeasyfree|\${time %H:%M}
EOF
if [[ "$EUID" -eq 0 ]]
then
        chown "${SUDO_USER:-$USER}" "/home/${SUDO_USER:-$USER}"/.conkyinscreen
fi
fi

added some more telegraf inputs...