Check if the system has systemd before trying to use it to stop/start services

update_ombi.sh

@@ -102,6 +102,14 @@ unzip-strip() (
     fi && rm -rf "$temp"/* "$temp"
 )
 
+IsSystemdSupported() {
+    if command -v systemctl > /dev/null && systemctl | grep -q '\-\.mount'; then
+        return 0
+    else
+        return 1
+    fi
+}
+
 # Import any custom config to override the defaults, if necessary
 configfile="$(dirname $0)/update_ombi.conf"
 if [ -e $configfile ]; then
@@ -222,7 +230,8 @@ fi
 .log 6 "File size validated...checking Ombi service status..."
 
 declare -i running=0
-if [ "`systemctl is-active $ombiservicename`" == "active" ]; then
+if IsSystemdSupported; then
+    if [ "`systemctl is-active $ombiservicename`" == "active" ]; then
         running=1
         .log 6 "Ombi is active...attempting to stop..."
         declare -i i=1
@@ -252,8 +261,11 @@ if [ "`systemctl is-active $ombiservicename`" == "active" ]; then
                 exit 99
             fi
         done
-else
+    else
         .log 6 "Ombi is not active...installing update..."
+    fi
+else
+    .log 4 "systemd not available..."
 fi
 
 unzip-strip $file $installdir