uses sudo instead of su and more helpful on errors

lgsm/functions/command_install_init.sh

@@ -8,6 +8,14 @@ commandaction="systemd service file"
 functionselfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"
 fn_firstcommand_set
 
+fn_print_content_on_error() {
+	fn_print_fail_nl "sudo exited with non 0 exit code - something went wrong"
+	fn_print_information_nl "You can place the contents of the service file manually in $1"
+	fn_print_information_nl "Contents: "
+	printf "\n$2"
+	exit 1
+}
+
 fn_install_systemd() {
 	file_c=$'[Unit]
 Description=LinuxGSM gamename Server
@@ -25,19 +33,21 @@ RemainAfterExit=yes
 [Install]
 WantedBy=multi-user.target'
 	file_c=$(printf "$file_c" | sed s/'gamename'/$gamename/g | sed "s|path|$path|g" | sed s/'whoami'/$(whoami)/g)
+	path="/etc/systemd/system/${selfname}-lgsm.service"
 	fn_print_ok_nl "Generated the file contents"
-	fn_print_information_nl "Enter the password of root:"
-	su -c "echo \"$file_c\" > /etc/systemd/system/${selfname}-lgsm.service" || return 1 && return 0
+	fn_print_information_nl "Enter the password of root: (only if you haven't this terminal in the past few minutes)"
+	printf "$file_c" | sudo tee $path && return 0 || fn_print_content_on_error $path "$file_c"
 }
 
 fn_install_systemd
 if [ $? -eq 1 ]
 then
-	fn_print_error_nl "su exited with non 0 exit code.. something went wrong";
-	fn_script_log_fatal "su exited with non 0 exit code."
+	fn_script_log_fatal "sudo exited with non 0 exit code."
 else
+	echo
 	fn_print_complete_nl "Placed the file in /etc/systemd/system/ as ${selfname}-lgsm.service"
 	fn_print_information_nl "run \`systemctl enable ${selfname}-lgsm.service\` (as root), to enable the game on boot"
-	fn_script_log_pass "sucessfullly installed the systemd service file"
+	fn_script_log_pass "successfullly installed the systemd service file"
 fi
 core_exit.sh
+