diff --git a/src/meta_plugin/mod.rs b/src/meta_plugin/mod.rs
index 85d29fa..2c0f6c1 100644
--- a/src/meta_plugin/mod.rs
+++ b/src/meta_plugin/mod.rs
@@ -11,6 +11,9 @@ pub mod read_rate;
 pub mod hostname;
 pub mod cwd;
 pub mod user;
+pub mod shell;
+pub mod shell_pid;
+pub mod keep_pid;
 
 use crate::meta_plugin::program::MetaPluginProgram;
 use crate::meta_plugin::digest::DigestSha256MetaPlugin;
@@ -22,6 +25,9 @@ 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;
 
 /// Represents metadata to be stored
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -124,9 +130,9 @@ pub enum MetaPluginType {
     Binary,
     Text,
     User,
-    // Shell,
-    // ShellPid,
-    // KeepPid,
+    Shell,
+    ShellPid,
+    KeepPid,
     DigestSha256,
     DigestMd5,
     ReadTime,
@@ -287,9 +293,9 @@ pub fn get_meta_plugin(meta_plugin_type: MetaPluginType) -> Box<dyn MetaPlugin>
         MetaPluginType::Binary => Box::new(BinaryMetaPlugin::new_simple()),
         MetaPluginType::Text => Box::new(TextMetaPlugin::new_simple()),
         MetaPluginType::User => Box::new(UserMetaPlugin::new_simple()),
-        // MetaPluginType::Shell => Box::new(ShellMetaPlugin::new_simple()),
-        // MetaPluginType::ShellPid => Box::new(ShellPidMetaPlugin::new_simple()),
-        // MetaPluginType::KeepPid => Box::new(KeepPidMetaPlugin::new_simple()),
+        MetaPluginType::Shell => Box::new(ShellMetaPlugin::new_simple()),
+        MetaPluginType::ShellPid => Box::new(ShellPidMetaPlugin::new_simple()),
+        MetaPluginType::KeepPid => Box::new(KeepPidMetaPlugin::new_simple()),
         MetaPluginType::DigestSha256 => Box::new(DigestSha256MetaPlugin::new_simple()),
         MetaPluginType::DigestMd5 => Box::new(MetaPluginProgram::new_simple("md5sum", vec![], "digest_md5".to_string(), true)),
         MetaPluginType::ReadTime => Box::new(ReadTimeMetaPlugin::new_simple()),