diff --git a/pyv8unpack.py b/pyv8unpack.py
index 1fdd887..7c2eefb 100644
--- a/pyv8unpack.py
+++ b/pyv8unpack.py
@@ -8,11 +8,47 @@
 import logging
 import tempfile
 import re
+import platform
 
 logging.basicConfig(level=logging.ERROR)  # DEBUG => print ALL msgs
 
 modified = re.compile('^(?:M|A)(\s+)(?P<name>.*)')
 
+def get_path_to_1c():
+    '''
+    get path to 1c binary. 
+    fist env, "PATH1C" 
+    two env "PROGRAMFILES" on windows
+    three /opt/1c - only linux
+    
+    '''
+    
+    cmd = os.getenv("PATH1C")
+    if not cmd is None:
+        return os.getenv("PATH1C")
+    
+    if platform.system() == "Darwin":
+        raise Exception("MacOS not run 1C")
+    elif platform.system() == "Windows":
+        program_files = os.getenv("PROGRAMFILES(X86)")
+        if program_files is None:
+            #FIXME: проверить архетиктуру.  
+            program_files = os.getenv("PROGRAMFILES")
+            if program_files is None:
+                raise Exeption("path to Program files not found");
+        cmd = os.path.join(program_files, "1cv8")
+        maxversion =  max(list(filter((lambda x: '8.' in x), os.listdir(cmd))))
+        if maxversion is None:
+            raise Exception("not found verion dirs")
+        cmd = os.path.join(cmd, maxversion + os.path.sep + "bin"+os.path.sep+"1cv8.exe")
+
+        if not os.path.isfile(cmd):
+            raise Exception("file not found %s" %(cmd))
+        
+    else:
+        cmd = subprocess.Popen(["which", "1cv8"], stdout=PIPE).communicate()[0].strip()
+    
+    return cmd 
 
 def get_list_of_comitted_files():
     """
@@ -61,8 +97,9 @@ def decompile():
 
     dirsource = os.path.abspath(os.path.join(os.path.curdir, "src"))
     curabsdirpath = os.path.abspath(os.path.curdir)
-    pathbin1c = "C:\\Program Files\\1cv82\8.2.17.153\\bin\\1cv8.exe"
-    pathbin1c = "c:\\Program Files (x86)\\1cv8\\8.3.4.304\\bin\\1cv8.exe"
+    #pathbin1c = "C:\\Program Files\\1cv82\8.2.17.153\\bin\\1cv8.exe"
+    #pathbin1c = "c:\\Program Files (x86)\\1cv8\\8.3.4.304\\bin\\1cv8.exe"
+    pathbin1c = get_path_to_1c()
 
     for filename in dataprocessor_files:
         print("file %s" % filename)