feat issue #134: support linux mint by checking /etc/os-release for ID_LIKE and UBUNTU_CODENAME

Signed-off-by: Peter Tandler <[email protected]>

Author: ptandler

install.sh

@@ -112,7 +112,15 @@ get_distribution() {
 	lsb_dist=""
 	# Every system that we officially support has /etc/os-release
 	if [ -r /etc/os-release ]; then
-		lsb_dist="$(. /etc/os-release && echo "$ID")"
+		# lsb_dist="$(. /etc/os-release && echo "$ID")"
+		# linux mint provides the information that it is "like" ubuntu
+		# if this is present, use $ID_LIKE
+		lsb_dist="$(. /etc/os-release && 
+			if [ -n "$ID_LIKE" ];
+			then echo "$ID_LIKE"
+			else echo "$ID"
+			fi
+			)"
 	fi
 	# Returning an empty string here should be alright since the
 	# case statements don't act unless you provide an actual value
@@ -305,7 +313,12 @@ do_install() {
 	case "$lsb_dist" in
 
 		ubuntu)
-			if command_exists lsb_release; then
+			# check also for ubuntu-like distros, such as linux mint
+			# if they do pass the `UBUNTU_CODENAME`
+			if [ -r /etc/os-release ]; then
+				dist_version=$(. /etc/os-release && echo "$UBUNTU_CODENAME")
+			fi
+			if [ -z "$dist_version" ] && command_exists lsb_release; then
 				dist_version="$(lsb_release --codename | cut -f2)"
 			fi
 			if [ -z "$dist_version" ] && [ -r /etc/lsb-release ]; then
@@ -348,6 +361,8 @@ do_install() {
 	# Check if this is a forked Linux distro
 	check_forked
 
+	echo "Detected distribution to use for installation: $lsb_dist and version $dist_version"
+
 	# Run setup for each distro accordingly
 	case "$lsb_dist" in
 		ubuntu|debian|raspbian)