Objective: Append multiline text with cat
Examples
Replace contents of /etc/apache2/mods-available/geoip.conf
cat <<'EOF' > /etc/apache2/mods-available/geoip.conf
<IfModule mod_geoip.c>
GeoIPEnable On
GeoIPScanProxyHeaders On
GeoIPDBFile /opt/modsecurity/etc/GeoIP.dat MemoryCache
</IfModule>
EOF