diff --git a/core/src/main/java/io/xpipe/core/store/CommandProcessControl.java b/core/src/main/java/io/xpipe/core/store/CommandProcessControl.java
index d5aa6f2a..1bbaa986 100644
--- a/core/src/main/java/io/xpipe/core/store/CommandProcessControl.java
+++ b/core/src/main/java/io/xpipe/core/store/CommandProcessControl.java
@@ -33,6 +33,8 @@ public interface CommandProcessControl extends ProcessControl {
         }
     }
 
+    public boolean waitFor();
+
     CommandProcessControl customCharset(Charset charset);
 
     int getExitCode();
@@ -70,7 +72,7 @@ public interface CommandProcessControl extends ProcessControl {
         }
     }
 
-    Thread discardOut();
+    void discardOut();
 
-    Thread discardErr();
+    void discardErr();
 }
diff --git a/core/src/main/java/io/xpipe/core/store/MachineStore.java b/core/src/main/java/io/xpipe/core/store/MachineStore.java
index f6b8274a..756ed1c1 100644
--- a/core/src/main/java/io/xpipe/core/store/MachineStore.java
+++ b/core/src/main/java/io/xpipe/core/store/MachineStore.java
@@ -1,7 +1,5 @@
 package io.xpipe.core.store;
 
-import io.xpipe.core.util.SupportedOs;
-
 import java.io.InputStream;
 import java.io.OutputStream;
 
@@ -19,7 +17,7 @@ public interface MachineStore extends FileSystemStore, ShellStore {
 
     public default String queryMachineName() throws Exception {
         try (var pc = create().start()) {
-            var operatingSystem = SupportedOs.determine(pc);
+            var operatingSystem = pc.getOsType();
             return operatingSystem.determineOperatingSystemName(pc);
         }
     }
diff --git a/core/src/main/java/io/xpipe/core/store/ProcessControl.java b/core/src/main/java/io/xpipe/core/store/ProcessControl.java
index 49ed3c7d..f795e815 100644
--- a/core/src/main/java/io/xpipe/core/store/ProcessControl.java
+++ b/core/src/main/java/io/xpipe/core/store/ProcessControl.java
@@ -13,8 +13,6 @@ public interface ProcessControl extends AutoCloseable {
 
     void writeLine(String line) throws IOException;
 
-    void typeLine(String line);
-
     @Override
     void close() throws IOException;
     void kill() throws Exception;
@@ -23,8 +21,6 @@ public interface ProcessControl extends AutoCloseable {
 
     ProcessControl start() throws Exception;
 
-    boolean waitFor() throws Exception;
-
     InputStream getStdout();
 
     OutputStream getStdin();
diff --git a/core/src/main/java/io/xpipe/core/store/ShellProcessControl.java b/core/src/main/java/io/xpipe/core/store/ShellProcessControl.java
index 5dc31d5b..c86709d6 100644
--- a/core/src/main/java/io/xpipe/core/store/ShellProcessControl.java
+++ b/core/src/main/java/io/xpipe/core/store/ShellProcessControl.java
@@ -1,5 +1,6 @@
 package io.xpipe.core.store;
 
+import io.xpipe.core.util.OsType;
 import io.xpipe.core.util.SecretValue;
 import lombok.NonNull;
 
@@ -11,6 +12,10 @@ import java.util.stream.Collectors;
 
 public interface ShellProcessControl extends ProcessControl {
 
+    int getProcessId();
+
+    OsType getOsType();
+
     ShellProcessControl elevated(Predicate<ShellProcessControl> elevationFunction);
 
     ShellProcessControl elevation(SecretValue value);
@@ -23,6 +28,10 @@ public interface ShellProcessControl extends ProcessControl {
         return shell(type.openCommand());
     }
 
+    default CommandProcessControl command(@NonNull ShellType type, String command) {
+        return command(type.switchTo(command));
+    }
+
     default ShellProcessControl shell(@NonNull List<String> command) {
         return shell(
                 command.stream().map(s -> s.contains(" ") ? "\"" + s + "\"" : s).collect(Collectors.joining(" ")));
@@ -36,11 +45,6 @@ public interface ShellProcessControl extends ProcessControl {
 
     void executeCommand(String command) throws Exception;
 
-    default void executeCommand(List<String> command) throws Exception {
-        executeCommand(
-                command.stream().map(s -> s.contains(" ") ? "\"" + s + "\"" : s).collect(Collectors.joining(" ")));
-    }
-
     @Override
     ShellProcessControl start() throws Exception;
 
@@ -59,5 +63,5 @@ public interface ShellProcessControl extends ProcessControl {
                 command.stream().map(s -> s.contains(" ") ? "\"" + s + "\"" : s).collect(Collectors.joining(" ")));
     }
 
-    void exit() throws IOException;
+    void exitAndWait() throws IOException;
 }
diff --git a/core/src/main/java/io/xpipe/core/store/ShellType.java b/core/src/main/java/io/xpipe/core/store/ShellType.java
index c45da28a..50d7cad6 100644
--- a/core/src/main/java/io/xpipe/core/store/ShellType.java
+++ b/core/src/main/java/io/xpipe/core/store/ShellType.java
@@ -27,6 +27,8 @@ public interface ShellType {
 
     String getEchoCommand(String s, boolean toErrorStream);
 
+    String queryShellProcessId(ShellProcessControl control) throws Exception;
+
     List<String> openCommand();
 
     String switchTo(String cmd);
diff --git a/core/src/main/java/io/xpipe/core/store/ShellTypes.java b/core/src/main/java/io/xpipe/core/store/ShellTypes.java
index e6aa54ae..32f6350d 100644
--- a/core/src/main/java/io/xpipe/core/store/ShellTypes.java
+++ b/core/src/main/java/io/xpipe/core/store/ShellTypes.java
@@ -5,6 +5,7 @@ import io.xpipe.core.charsetter.NewLine;
 import lombok.Value;
 
 import java.io.BufferedReader;
+import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
@@ -50,6 +51,19 @@ public class ShellTypes {
             return toErrorStream ? "(echo " + s + ")1>&2" : "echo " + s;
         }
 
+        @Override
+        public String queryShellProcessId(ShellProcessControl control) throws IOException {
+            control.writeLine("powershell (Get-WmiObject Win32_Process -Filter ProcessId=$PID).ParentProcessId");
+
+            var r = new BufferedReader(new InputStreamReader(control.getStdout(), StandardCharsets.US_ASCII));
+            // Read echo of command
+            r.readLine();
+            // Read actual output
+            var line = r.readLine();
+            r.readLine();
+            return line;
+        }
+
         @Override
         public String getConcatenationOperator() {
             return "&";
@@ -144,6 +158,23 @@ public class ShellTypes {
     @Value
     public static class PowerShell implements ShellType {
 
+        @Override
+        public String queryShellProcessId(ShellProcessControl control) throws IOException {
+            control.writeLine("powershell (Get-WmiObject Win32_Process -Filter ProcessId=$PID).ParentProcessId");
+
+            var r = new BufferedReader(new InputStreamReader(control.getStdout(), StandardCharsets.US_ASCII));
+            // Read echo of command
+            r.readLine();
+            // Read actual output
+            var line = r.readLine();
+            return line;
+        }
+
+        @Override
+        public String getConcatenationOperator() {
+            return ";";
+        }
+
         @Override
         public boolean echoesInput() {
             return true;
@@ -169,7 +200,11 @@ public class ShellTypes {
 
         @Override
         public String getEchoCommand(String s, boolean toErrorStream) {
-            return String.format("%s \"%s\"", toErrorStream ? "Write-Error" : "Write-Output", s);
+            if (toErrorStream) {
+                return String.format("$host.ui.WriteErrorLine('%s')", s);
+            }
+
+            return String.format("%s \"%s\"", "Write-Output", s);
         }
 
         @Override
@@ -204,12 +239,17 @@ public class ShellTypes {
 
         @Override
         public Charset determineCharset(ShellProcessControl control) throws Exception {
-            try (CommandProcessControl c = control.command("chcp").start()) {
-                var output = c.readOrThrow().strip();
-                var matcher = Pattern.compile("\\d+").matcher(output);
-                matcher.find();
-                return Charset.forName("ibm" + matcher.group());
-            }
+            control.writeLine("chcp");
+
+            var r = new BufferedReader(new InputStreamReader(control.getStdout(), StandardCharsets.US_ASCII));
+            // Read echo of command
+            r.readLine();
+            // Read actual output
+            var line = r.readLine();
+
+            var matcher = Pattern.compile("\\d+").matcher(line);
+            matcher.find();
+            return Charset.forName("ibm" + matcher.group());
         }
 
         @Override
@@ -264,6 +304,16 @@ public class ShellTypes {
             return "echo " + s + (toErrorStream ? " 1>&2" : "");
         }
 
+
+        @Override
+        public String queryShellProcessId(ShellProcessControl control) throws Exception {
+            try (CommandProcessControl c = control.command("echo $$").start()) {
+                var out = c.readOnlyStdout();
+                var matcher = Pattern.compile("\\d+$").matcher(out);
+                matcher.find();
+                return matcher.group(0);
+            }
+        }
         @Override
         public List<String> openCommand() {
             return List.of("sh", "-i", "-l");
@@ -291,7 +341,7 @@ public class ShellTypes {
 
         @Override
         public List<String> createFileExistsCommand(String file) {
-            return List.of("test", "-f", file, "||", "test", "-d", file);
+            return List.of("(", "test", "-f", file, "||", "test", "-d", file, ")");
         }
 
         @Override
diff --git a/core/src/main/java/io/xpipe/core/util/SupportedOs.java b/core/src/main/java/io/xpipe/core/util/OsType.java
similarity index 72%
rename from core/src/main/java/io/xpipe/core/util/SupportedOs.java
rename to core/src/main/java/io/xpipe/core/util/OsType.java
index 33f6ce9b..830f8fbe 100644
--- a/core/src/main/java/io/xpipe/core/util/SupportedOs.java
+++ b/core/src/main/java/io/xpipe/core/util/OsType.java
@@ -1,36 +1,37 @@
 package io.xpipe.core.util;
 
-import io.xpipe.core.store.*;
-import lombok.SneakyThrows;
+import io.xpipe.core.store.CommandProcessControl;
+import io.xpipe.core.store.PropertiesFormatsParser;
+import io.xpipe.core.store.ShellProcessControl;
+import io.xpipe.core.store.ShellTypes;
 
 import java.nio.file.Path;
+import java.util.Locale;
 import java.util.Map;
 import java.util.UUID;
 
-public interface SupportedOs {
+public interface OsType {
 
     Windows WINDOWS = new Windows();
     Linux LINUX = new Linux();
     Mac MAC = new Mac();
 
-    static SupportedOs determine(ShellProcessControl pc) throws Exception {
-        try (CommandProcessControl c = pc.command(pc.getShellType().createFileExistsCommand("C:\\pagefile.sys")).start()) {
-            if (c.discardAndCheckExit()) {
-                return WINDOWS;
-            }
-        }
-
-        return LINUX;
-    }
+    String getName();
 
     Map<String, String> getProperties(ShellProcessControl pc) throws Exception;
 
     String determineOperatingSystemName(ShellProcessControl pc) throws Exception;
 
-    @SneakyThrows
-    public static SupportedOs getLocal() {
-        try (ShellProcessControl pc = ShellStore.local().create().start()) {
-            return determine(pc);
+    public static OsType getLocal() {
+        String osName = System.getProperty("os.name", "generic").toLowerCase(Locale.ENGLISH);
+        if ((osName.contains("mac")) || (osName.contains("darwin"))) {
+            return MAC;
+        } else if (osName.contains("win")) {
+            return WINDOWS;
+        } else if (osName.contains("nux")) {
+            return LINUX;
+        } else {
+            throw new UnsupportedOperationException("Unknown operating system");
         }
     }
 
@@ -38,7 +39,12 @@ public interface SupportedOs {
 
     UUID getSystemUUID(ShellProcessControl pc) throws Exception;
 
-    static class Windows implements SupportedOs {
+    static class Windows implements OsType {
+
+        @Override
+        public String getName() {
+            return "Windows";
+        }
 
         @Override
         public Map<String, String> getProperties(ShellProcessControl pc) throws Exception {
@@ -71,7 +77,12 @@ public interface SupportedOs {
         }
     }
 
-    static class Linux implements SupportedOs {
+    static class Linux implements OsType {
+
+        @Override
+        public String getName() {
+            return "Linux";
+        }
 
         @Override
         public Map<String, String> getProperties(ShellProcessControl pc) throws Exception {
@@ -81,7 +92,7 @@ public interface SupportedOs {
         @Override
         public String determineOperatingSystemName(ShellProcessControl pc) throws Exception {
             try (CommandProcessControl c =
-                    pc.shell(ShellTypes.SH).command("lsb_release -a").start()) {
+                    pc.command(ShellTypes.SH, "lsb_release -a").start()) {
                 var text = c.readOnlyStdout();
                 if (c.getExitCode() == 0) {
                     return PropertiesFormatsParser.parse(text, ":").getOrDefault("Description", null);
@@ -89,7 +100,7 @@ public interface SupportedOs {
             }
 
             try (CommandProcessControl c =
-                         pc.shell(ShellTypes.SH).command("cat /etc/*release").start()) {
+                    pc.command(ShellTypes.SH, "cat /etc/*release").start()) {
                 var text = c.readOnlyStdout();
                 if (c.getExitCode() == 0) {
                     return PropertiesFormatsParser.parse(text, "=").getOrDefault("PRETTY_NAME", null);
@@ -97,8 +108,7 @@ public interface SupportedOs {
             }
 
             String type = "Unknown";
-            try (CommandProcessControl c =
-                         pc.shell(ShellTypes.SH).command("uname -o").start()) {
+            try (CommandProcessControl c = pc.command(ShellTypes.SH, "uname -o").start()) {
                 var text = c.readOnlyStdout();
                 if (c.getExitCode() == 0) {
                     type = text.strip();
@@ -106,8 +116,7 @@ public interface SupportedOs {
             }
 
             String version = "?";
-            try (CommandProcessControl c =
-                         pc.shell(ShellTypes.SH).command("uname -r").start()) {
+            try (CommandProcessControl c = pc.command(ShellTypes.SH, "uname -r").start()) {
                 var text = c.readOnlyStdout();
                 if (c.getExitCode() == 0) {
                     version = text.strip();
@@ -128,7 +137,12 @@ public interface SupportedOs {
         }
     }
 
-    static class Mac implements SupportedOs {
+    static class Mac implements OsType {
+
+        @Override
+        public String getName() {
+            return "Mac";
+        }
 
         @Override
         public Map<String, String> getProperties(ShellProcessControl pc) throws Exception {
diff --git a/extension/src/main/java/io/xpipe/extension/event/EventHandler.java b/extension/src/main/java/io/xpipe/extension/event/EventHandler.java
index 4e1ee8ff..0e6097d5 100644
--- a/extension/src/main/java/io/xpipe/extension/event/EventHandler.java
+++ b/extension/src/main/java/io/xpipe/extension/event/EventHandler.java
@@ -18,6 +18,7 @@ public abstract class EventHandler {
                 cat = "log";
             }
             System.out.println("[" + cat + "] " + te.toString());
+            System.out.flush();
         }
 
         @Override