diff --git a/src/meta_plugin/cwd.rs b/src/meta_plugin/cwd.rs
index 6eaa7c3..ec7370f 100644
--- a/src/meta_plugin/cwd.rs
+++ b/src/meta_plugin/cwd.rs
@@ -120,7 +120,6 @@ impl MetaPlugin for CwdMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/digest.rs b/src/meta_plugin/digest.rs
index 685580e..a1c1af2 100644
--- a/src/meta_plugin/digest.rs
+++ b/src/meta_plugin/digest.rs
@@ -246,7 +246,6 @@ impl MetaPlugin for DigestMetaPlugin {
 }
 
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/env.rs b/src/meta_plugin/env.rs
index 154935d..66c1fbf 100644
--- a/src/meta_plugin/env.rs
+++ b/src/meta_plugin/env.rs
@@ -139,7 +139,6 @@ impl MetaPlugin for EnvMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/exec.rs b/src/meta_plugin/exec.rs
index d7425ab..4c5a919 100644
--- a/src/meta_plugin/exec.rs
+++ b/src/meta_plugin/exec.rs
@@ -226,7 +226,6 @@ impl MetaPlugin for MetaPluginExec {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/hostname.rs b/src/meta_plugin/hostname.rs
index 0db2600..ab5f1c7 100644
--- a/src/meta_plugin/hostname.rs
+++ b/src/meta_plugin/hostname.rs
@@ -357,7 +357,6 @@ impl MetaPlugin for HostnameMetaPlugin {
     
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/keep_pid.rs b/src/meta_plugin/keep_pid.rs
index 28613af..f567dbc 100644
--- a/src/meta_plugin/keep_pid.rs
+++ b/src/meta_plugin/keep_pid.rs
@@ -137,7 +137,6 @@ impl MetaPlugin for KeepPidMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/magic.rs b/src/meta_plugin/magic.rs
index ba3d8ed..ffd0aeb 100644
--- a/src/meta_plugin/magic.rs
+++ b/src/meta_plugin/magic.rs
@@ -235,7 +235,6 @@ impl MetaPlugin for MagicFileMetaPlugin {
 }
 
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/mod.rs b/src/meta_plugin/mod.rs
index 2835055..685f7c0 100644
--- a/src/meta_plugin/mod.rs
+++ b/src/meta_plugin/mod.rs
@@ -1,5 +1,8 @@
 use log::debug;
 use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::sync::Mutex;
+use once_cell::sync::Lazy;
 
 pub mod exec;
 pub mod digest;
@@ -15,20 +18,6 @@ pub mod shell_pid;
 pub mod keep_pid;
 pub mod env;
 
-use crate::meta_plugin::exec::MetaPluginExec;
-use crate::meta_plugin::digest::DigestMetaPlugin;
-use crate::meta_plugin::read_time::ReadTimeMetaPlugin;
-use crate::meta_plugin::read_rate::ReadRateMetaPlugin;
-use crate::meta_plugin::magic::MagicFileMetaPlugin;
-use crate::meta_plugin::text::TextMetaPlugin;
-use crate::meta_plugin::hostname::HostnameMetaPlugin;
-use crate::meta_plugin::cwd::CwdMetaPlugin;
-use crate::meta_plugin::user::UserMetaPlugin;
-use crate::meta_plugin::shell::ShellMetaPlugin;
-use crate::meta_plugin::shell_pid::ShellPidMetaPlugin;
-use crate::meta_plugin::keep_pid::KeepPidMetaPlugin;
-use crate::meta_plugin::env::EnvMetaPlugin;
-
 /// Represents metadata to be stored
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct MetaData {
@@ -335,7 +324,7 @@ pub fn get_meta_plugin(
         }
         
         return Box::new(MetaPluginExec::new(&program_name, 
-                                    args.iter().map(|s| s.as_str()).collect(), 
+                                    args.iter().map(|s: &String| s.as_str()).collect(), 
                                     meta_name, 
                                     split_whitespace, 
                                     options, 
diff --git a/src/meta_plugin/read_rate.rs b/src/meta_plugin/read_rate.rs
index 00ab673..0570806 100644
--- a/src/meta_plugin/read_rate.rs
+++ b/src/meta_plugin/read_rate.rs
@@ -136,7 +136,6 @@ impl MetaPlugin for ReadRateMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/read_time.rs b/src/meta_plugin/read_time.rs
index 1149e25..0f66a69 100644
--- a/src/meta_plugin/read_time.rs
+++ b/src/meta_plugin/read_time.rs
@@ -129,7 +129,6 @@ impl MetaPlugin for ReadTimeMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/shell.rs b/src/meta_plugin/shell.rs
index e97f285..fb3b0c4 100644
--- a/src/meta_plugin/shell.rs
+++ b/src/meta_plugin/shell.rs
@@ -141,7 +141,6 @@ impl MetaPlugin for ShellMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/shell_pid.rs b/src/meta_plugin/shell_pid.rs
index 7751747..15a3f5a 100644
--- a/src/meta_plugin/shell_pid.rs
+++ b/src/meta_plugin/shell_pid.rs
@@ -141,7 +141,6 @@ impl MetaPlugin for ShellPidMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/text.rs b/src/meta_plugin/text.rs
index 9cd9c46..8973756 100644
--- a/src/meta_plugin/text.rs
+++ b/src/meta_plugin/text.rs
@@ -640,7 +640,6 @@ impl MetaPlugin for TextMetaPlugin {
     
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]
diff --git a/src/meta_plugin/user.rs b/src/meta_plugin/user.rs
index 9166371..a93ec06 100644
--- a/src/meta_plugin/user.rs
+++ b/src/meta_plugin/user.rs
@@ -96,7 +96,6 @@ impl MetaPlugin for UserMetaPlugin {
     }
 }
 use crate::meta_plugin::register_meta_plugin;
-use crate::meta_plugin::MetaPluginType;
 
 // Register the plugin at module initialization time
 #[ctor::ctor]