diff --git a/README b/README
index 88672d4..ab2c7b4 100644
--- a/README
+++ b/README
@@ -25,24 +25,25 @@ To scan a device's inputs use `$ aseqdump -p <client name>`
 Format is a regular shell format
 
 -- Environment
-- Global
-$channel: channel of the
-
-
 
 - Note
 $id: id of the note
+$channel: channel of the note
 $velocity: velocity of the note
 
 - Controller
-$id: id of the controller
 $value: value of the controller (remapped)
+$id: id of the controller
+$channel: channel of the controller
 $rawvalue: original value of the controller
 
-- Pitch bend
+- Pitch
 $value: value of the bend (remapped)
 $rawvalue: original value of the bend
 
+- System
+$code: hexadecimal code of the system signal
+
 
 -- FILE FORMAT --
 [<device>,<device>]
@@ -57,32 +58,33 @@ $rawvalue: original value of the bend
 
 - <command> format (global):
 {
-  type=<note/controller/pitch>
+  type=<note/controller/pitch/system>
   shell=<shell command>
-  channel=<*/x>
 }
 -
 *type: type of the signal: note/controller/pitch
   > mandatory
 *shell: shell command to be executed
   > mandatory
-*channel: value from 0 to 16 for channel. Can use * for any channel
-  > optional, default *
 
 - <command> format (note)
 {
   id=<x/x:y/*>
+  channel=<*/x>
   trigger=<x/x:y/*>
 }
 -
 *id: value from 0 to 127 referring to id of note/controller
   > optional, default 0:127
+*channel: value from 0 to 16 for channel. Can use * for any channel
+  > optional, default *
 *trigger: note velocity from 0 to 127 that triggers the command. Can enter an interval x:y or single value
   > optional, default 1:127
 
 - <command> format (controller)
 {
   id=<x/x:y/*>
+  channel=<*/x>
   range=<x/x:y/*>
   remap=<x/x:y/*>
   float=<true/false>
@@ -90,6 +92,8 @@ $rawvalue: original value of the bend
 -
 *id: value from 0 to 127 referring to id of note/controller
   > optional, default 0:127
+*channel: value from 0 to 16 for channel. Can use * for any channel
+  > optional, default *
 *range: controller value from 0 to 127 that triggers command. Can enter an interval x:y or single value
   > optional, default 0:127
 *remap: remaps the range to given interval. Interval can be inversed and float
diff --git a/include/command.hpp b/include/command.hpp
index 295b23f..0cccedf 100644
--- a/include/command.hpp
+++ b/include/command.hpp
@@ -9,7 +9,7 @@ class NoteCommand
 {
 public:
 
-  NoteCommand(int8_t ch, uint8_t l, uint8_t h, std::string sh);
+  NoteCommand(int8_t ch, uint8_t l, uint8_t h, std::string const& sh);
 
   int8_t channel;
   uint8_t low;
@@ -21,7 +21,7 @@ class ControllerCommand
 {
 public:
 
-  ControllerCommand(int8_t ch, uint8_t l, uint8_t h, float ml, float mm, bool fl, std::string sh);
+  ControllerCommand(int8_t ch, uint8_t l, uint8_t h, float ml, float mm, bool fl, std::string const& sh);
 
   int8_t channel;
   uint8_t min;
@@ -36,7 +36,7 @@ class PitchCommand
 {
 public:
 
-  PitchCommand(uint8_t ch, int16_t l, int16_t h, float ml, float mh, bool fl, std::string sh);
+  PitchCommand(uint8_t ch, int16_t l, int16_t h, float ml, float mh, bool fl, std::string const& sh);
 
   int8_t channel;
   int16_t min;
@@ -47,5 +47,13 @@ public:
   std::string shell;
 };
 
+class SystemCommand
+{
+public:
+
+  SystemCommand(std::string const& sh);
+
+  std::string shell;
+};
 
 #endif //COMMAND_HPP
diff --git a/include/device.hpp b/include/device.hpp
index 144f410..68f923f 100644
--- a/include/device.hpp
+++ b/include/device.hpp
@@ -28,7 +28,7 @@ public:
   std::vector<NoteCommand> noteCommands[128];
   std::vector<ControllerCommand> ctrlCommands[128];
   std::vector<PitchCommand> pitchCommands;
-  // std::vector<Command> sysCommands;
+  std::vector<SystemCommand> sysCommands;
 
   std::thread thread;
 private:
diff --git a/src/command.cpp b/src/command.cpp
index 3eac0b3..45ace6e 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -1,6 +1,6 @@
 #include "command.hpp"
 
-NoteCommand::NoteCommand(int8_t ch, uint8_t l, uint8_t h, std::string sh)
+NoteCommand::NoteCommand(int8_t ch, uint8_t l, uint8_t h, std::string const& sh)
 {
   this->channel=ch;
   this->low=l;
@@ -8,7 +8,7 @@ NoteCommand::NoteCommand(int8_t ch, uint8_t l, uint8_t h, std::string sh)
   this->shell=sh;
 }
 
-ControllerCommand::ControllerCommand(int8_t ch, uint8_t l, uint8_t h, float ml, float mh, bool fl, std::string sh)
+ControllerCommand::ControllerCommand(int8_t ch, uint8_t l, uint8_t h, float ml, float mh, bool fl, std::string const& sh)
 {
   this->channel=ch;
   this->min=l;
@@ -19,7 +19,7 @@ ControllerCommand::ControllerCommand(int8_t ch, uint8_t l, uint8_t h, float ml,
   this->shell=sh;
 }
 
-PitchCommand::PitchCommand(uint8_t ch, int16_t l, int16_t h, float ml, float mh, bool fl, std::string sh)
+PitchCommand::PitchCommand(uint8_t ch, int16_t l, int16_t h, float ml, float mh, bool fl, std::string const& sh)
 {
   this->channel=ch;
   this->min=l;
@@ -29,3 +29,8 @@ PitchCommand::PitchCommand(uint8_t ch, int16_t l, int16_t h, float ml, float mh,
   this->floating=fl;
   this->shell=sh;
 }
+
+SystemCommand::SystemCommand(std::string const& sh)
+{
+  this->shell=sh;
+}
diff --git a/src/device.cpp b/src/device.cpp
index 612fea3..f5cb8bc 100644
--- a/src/device.cpp
+++ b/src/device.cpp
@@ -113,7 +113,9 @@ bool Device::import_chunk(Chunk const& ch)
     std::string tstr=tch["type"].strval();
     if(tstr == "system") //type system
     {
-      throw std::runtime_error("System commands not implemented yet");
+      std::string shell;
+      shell=tch["shell"].strval();
+      this->sysCommands.push_back(SystemCommand(shell));
     }
     else
     {
@@ -237,10 +239,23 @@ void Device::run_signal(char* buff)
 
   else if (index(buff, ':') != NULL) // MIDI command
   {
-    if (strstr(buff, "System exclusive") != NULL)
+    if (strstr(buff, "System exclusive") != NULL) //system exclusive
     {
-      printf("%s", buff);
-      //do stuff
+      char* val=buff+35;
+      std::string strval;
+      while(*val != '\n')
+      {
+        if(*val != ' ')
+          strval += *val;
+        val++;
+      }
+
+      for( auto it : this->sysCommands )
+      {
+        std::string command="code=" + strval + ";";
+        command += it.shell;
+        std::thread(sh, command).detach();
+      }
     }
     else
     {