Initial attempt at supporting Ubuntu Server

Pros:

- Supports Ubuntu Server 20.04+

Cons:

- Ugh, for some reason, keeps defaulting to the desktop/live branch
- The configuration isn't created either.

quickget

@@ -62,6 +62,7 @@ function pretty_name() {
     ubuntu-budgie)      PRETTY_NAME="Ubuntu Budgie";;
     ubuntukylin)       PRETTY_NAME="Ubuntu Kylin";;
     ubuntu-mate)        PRETTY_NAME="Ubuntu MATE";;
+    ubuntu-server)      PRETTY_NAME="Ubuntu Server";;
     ubuntustudio)      PRETTY_NAME="Ubuntu Studio";;
     void)               PRETTY_NAME="Void Linux";;
     zorin)              PRETTY_NAME="Zorin OS";;
@@ -77,6 +78,7 @@ function validate_release() {
 
   DISPLAY_NAME="$(pretty_name "${OS}")"
   case ${OS} in
+    ubuntu-server) RELEASE_GENERATOR="releases_ubuntuserver";;
     *ubuntu*) RELEASE_GENERATOR="releases_ubuntu";;
     *) RELEASE_GENERATOR="${1}";;
   esac
@@ -205,6 +207,7 @@ function os_support() {
     ubuntu-budgie \
     ubuntukylin \
     ubuntu-mate \
+    ubuntu-server \
     ubuntustudio \
     void \
     windows \
@@ -470,6 +473,10 @@ function releases_tails() {
     echo stable
 }
 
+function releases_ubuntuserver() {
+    echo live-server-20.04 live-server-22.04
+}
+
 function releases_ubuntu() {
     local LTS_SUPPORT="14.04 16.04 18.04 20.04 22.04"
     case "${OS}" in
@@ -1434,6 +1441,16 @@ function get_ubuntu() {
         URL="https://cdimage.ubuntu.com/${OS}/releases/${RELEASE}/release"
     fi
 
+
+    if [ "${RELEASE}" == "ubuntu-server" ]; then
+    if wget -q --spider "${URL}/SHA256SUMS"; then
+        ISO=$(wget -q -O- "${URL}/SHA256SUMS" | grep 'live-server\|install' | grep amd64 | grep iso | cut -d'*' -f2)
+        HASH=$(wget -q -O- "${URL}/SHA256SUMS" | grep 'live-server\|install' | grep amd64 | grep iso |cut -d' ' -f1)
+    else
+        ISO=$(wget -q -O- "${URL}/MD5SUMS" | grep 'live-server\|install' | grep amd64 | grep iso | cut -d' ' -f3)
+        HASH=$(wget -q -O- "${URL}/MD5SUMS" | grep 'live-server|install' | grep amd64 | grep iso | cut -d' ' -f1)
+    fi
+    else
     if wget -q --spider "${URL}/SHA256SUMS"; then
         ISO=$(wget -q -O- "${URL}/SHA256SUMS" | grep 'desktop\|dvd\|install' | grep amd64 | grep iso | cut -d'*' -f2)
         HASH=$(wget -q -O- "${URL}/SHA256SUMS" | grep 'desktop\|dvd\|install' | grep amd64 | grep iso |cut -d' ' -f1)
@@ -1441,7 +1458,7 @@ function get_ubuntu() {
         ISO=$(wget -q -O- "${URL}/MD5SUMS" | grep 'desktop\|dvd\|install' | grep amd64 | grep iso | cut -d' ' -f3)
         HASH=$(wget -q -O- "${URL}/MD5SUMS" | grep 'desktop\|dvd\|install' | grep amd64 | grep iso | cut -d' ' -f1)
     fi
-    #echo "${URL}/${ISO} ${HASH}"
+    fi
 
     if [[ "${RELEASE}" == *"daily"* ]] || [ "${RELEASE}" == "dvd" ]; then
         zsync_get "${URL}/${ISO}" "${VM_PATH}" "${OS}-devel.iso"
@@ -1965,6 +1982,10 @@ if [ -n "${2}" ]; then
         # macOS doesn't use create_vm()
         validate_release releases_macos
         get_macos
+    elif [[ "${OS}" == "ubuntuserver" ]]; then
+        # Ubuntu doesn't use create_vm()
+        validate_release releases_ubuntuserver
+        get_ubuntu
     elif [[ "${OS}" == *"ubuntu"* ]]; then
         # Ubuntu doesn't use create_vm()
         validate_release releases_ubuntu
@@ -1995,6 +2016,10 @@ if [ -n "${2}" ]; then
 else
     echo "ERROR! You must specify a release."
     case ${OS} in
+      *ubuntu-server*)
+        echo -n " - Releases: "
+        releases_ubuntuserver | sed -Ee 's/eol-\S+//g' # hide eol releases
+        ;;
       *ubuntu*)
         echo -n " - Releases: "
         releases_ubuntu | sed -Ee 's/eol-\S+//g' # hide eol releases