diff --git a/backend/src/main/kotlin/plugins/Databases.kt b/backend/src/main/kotlin/plugins/Databases.kt
index df8e040..4befedb 100644
--- a/backend/src/main/kotlin/plugins/Databases.kt
+++ b/backend/src/main/kotlin/plugins/Databases.kt
@@ -1,5 +1,6 @@
 package dev.svitan.plugins
 
+import dev.svitan.routes.ExecutorService
 import dev.svitan.schemas.ActionService
 import dev.svitan.schemas.AuthService
 import io.github.cdimascio.dotenv.Dotenv
@@ -20,6 +21,7 @@ fun Application.configureDatabases(dotenv: Dotenv) {
         password = dbPassword
     )
 
-    ActionService.init()
     AuthService.init()
+    ActionService.init()
+    ExecutorService.init(dotenv)
 }
diff --git a/backend/src/main/kotlin/routes/Action.kt b/backend/src/main/kotlin/routes/Action.kt
index 5ff4e77..11b47c4 100644
--- a/backend/src/main/kotlin/routes/Action.kt
+++ b/backend/src/main/kotlin/routes/Action.kt
@@ -5,7 +5,6 @@ import dev.svitan.schemas.ActionService
 import dev.svitan.schemas.AuthService
 import dev.svitan.schemas.NewActionDTO
 import dev.svitan.schemas.RunActionDTO
-import dev.svitan.schemas.sha256
 import io.ktor.http.*
 import io.ktor.server.application.*
 import io.ktor.server.auth.*
@@ -22,7 +21,7 @@ fun Application.routeAction() {
                 call.respond(ActionService.readAll())
             }
 
-            post("/action") {
+            put("/action") {
                 val action = call.receive<NewActionDTO>()
                 call.respond(HttpStatusCode.Created, ActionService.create(action))
             }
@@ -37,11 +36,6 @@ fun Application.routeAction() {
             post("/action/{id}") {
                 val idRaw = call.parameters["id"] ?: throw BadRequestException("Invalid id")
                 val id = UUID.fromString(idRaw)
-            }
-
-            put("/action/{id}") {
-                val idRaw = call.parameters["id"] ?: throw BadRequestException("Invalid id")
-                val id = UUID.fromString(idRaw)
 
                 val action = ActionService.read(id) ?: throw NotFoundException()
                 val run = call.receive<RunActionDTO>()
@@ -56,6 +50,13 @@ fun Application.routeAction() {
                 call.respond(HttpStatusCode.NoContent)
             }
 
+            patch("/action/{id}") {
+                val idRaw = call.parameters["id"] ?: throw BadRequestException("Invalid id")
+                val id = UUID.fromString(idRaw)
+                val action = call.receive<NewActionDTO>()
+                call.respond(ActionService.update(id, action))
+            }
+
             delete("/action/{id}") {
                 val idRaw = call.parameters["id"] ?: throw BadRequestException("Invalid id")
                 val id = UUID.fromString(idRaw)
diff --git a/backend/src/main/kotlin/routes/Auth.kt b/backend/src/main/kotlin/routes/Auth.kt
index 77fe346..7546ec1 100644
--- a/backend/src/main/kotlin/routes/Auth.kt
+++ b/backend/src/main/kotlin/routes/Auth.kt
@@ -19,7 +19,7 @@ fun Application.routeAuth() {
                 call.respond(AuthService.readAll())
             }
 
-            post("/auth") {
+            put("/auth") {
                 val auth = call.receive<NewAuthDTO>()
                 call.respond(HttpStatusCode.Created, AuthService.create(auth))
             }
diff --git a/backend/src/main/kotlin/routes/Executor.kt b/backend/src/main/kotlin/routes/Executor.kt
new file mode 100644
index 0000000..2b51be5
--- /dev/null
+++ b/backend/src/main/kotlin/routes/Executor.kt
@@ -0,0 +1,71 @@
+package dev.svitan.routes
+
+import io.github.cdimascio.dotenv.Dotenv
+import java.io.File
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+import java.util.UUID
+
+class ExecutorService {
+    companion object {
+        var dir: File? = null
+
+        fun init(dotenv: Dotenv) {
+            val path = dotenv["DATA_DIR"] ?: throw Exception("DATA_DIR not found")
+            dir = File(path)
+
+            if (!dir!!.exists()) {
+                val created = dir!!.mkdirs()
+                if (!created) throw Exception("Unable to create data directory")
+            } else if (dir!!.isFile) {
+                throw Exception("DATA_DIR must be a directory")
+            } else if (!dir!!.canRead() || !dir!!.canWrite() || !dir!!.canExecute()) {
+                throw Exception("DATA_DIR must be readable, writable, and executable")
+            }
+        }
+
+        fun writeFile(uuid: UUID, content: String) {
+            if (dir == null) throw Exception("FilesystemService not initialized")
+
+            val file = File(dir, "$uuid.sh")
+            file.writeText(content)
+        }
+
+        fun deleteFile(uuid: UUID) {
+            if (dir == null) throw Exception("FilesystemService not initialized")
+
+            val file = File(dir, "$uuid.sh")
+            if (!file.exists()) throw Exception("File not found")
+
+            val deleted = file.delete()
+            if (!deleted) throw Exception("Unable to delete file")
+        }
+
+        fun executeFile(uuid: UUID) {
+            if (dir == null) throw Exception("FilesystemService not initialized")
+
+            val file = File(dir, "$uuid.sh")
+            if (!file.exists() || !file.canExecute()) throw Exception("File not found or not executable")
+
+            val now = LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
+            val stdout = File(dir, "$uuid-$now-stdout")
+            val stderr = File(dir, "$uuid-$now-stderr")
+            ProcessBuilder("bash", file.absolutePath)
+                .redirectOutput(ProcessBuilder.Redirect.to(stdout))
+                .redirectError(ProcessBuilder.Redirect.to(stderr))
+                .start()
+        }
+
+        fun executeSource(uuid: UUID, source: String) {
+            if (dir == null) throw Exception("FilesystemService not initialized")
+
+            val now = LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME)
+            val stdout = File(dir, "$uuid-$now-stdout")
+            val stderr = File(dir, "$uuid-$now-stderr")
+            ProcessBuilder("bash", "-c", source)
+                .redirectOutput(ProcessBuilder.Redirect.to(stdout))
+                .redirectError(ProcessBuilder.Redirect.to(stderr))
+                .start()
+        }
+    }
+}
diff --git a/backend/src/main/kotlin/schemas/Action.kt b/backend/src/main/kotlin/services/Action.kt
similarity index 100%
rename from backend/src/main/kotlin/schemas/Action.kt
rename to backend/src/main/kotlin/services/Action.kt
diff --git a/backend/src/main/kotlin/schemas/Auth.kt b/backend/src/main/kotlin/services/Auth.kt
similarity index 100%
rename from backend/src/main/kotlin/schemas/Auth.kt
rename to backend/src/main/kotlin/services/Auth.kt