hardware service works on linux

Azaion.Inference/hardware_service.pyx

@@ -1,20 +1,9 @@
+import os
 import subprocess
 import pynvml
 
 
 cdef class HardwareService:
-    """Handles hardware information retrieval and hash generation."""
-
-    def __init__(self):
-        try:
-            res = subprocess.check_output("ver", shell=True).decode('utf-8')
-            if "Microsoft Windows" in res:
-                self.is_windows = True
-            else:
-                self.is_windows = False
-        except Exception:
-            print('Error during os type checking')
-            self.is_windows = False
 
     @staticmethod
     cdef has_nvidia_gpu():
@@ -40,7 +29,7 @@ cdef class HardwareService:
                 pass
 
     cdef str get_hardware_info(self):
-        if self.is_windows:
+        if os.name == 'nt': # windows
             os_command = (
                 "powershell -Command \""
                 "Get-CimInstance -ClassName Win32_Processor | Select-Object -ExpandProperty Name | Write-Output; "
@@ -51,20 +40,17 @@ cdef class HardwareService:
             )
         else:
             os_command = (
-                "/bin/bash -c \" lscpu | grep 'Model name:' | cut -d':' -f2 && "
+                "lscpu | grep 'Model name:' | cut -d':' -f2 && "
                 "lspci | grep VGA | cut -d':' -f3 && "
-                "free -g | grep Mem: | awk '{print $2}' && \""
-                "udevadm info --query=property --name=\"/dev/$(lsblk -no pkname \"$(findmnt -n -o SOURCE --target /)\")\" | grep -E 'ID_SERIAL=|ID_SERIAL_SHORT=' | cut -d'=' -f2- | head -n1 && "
+                "free -k | awk '/^Mem:/ {print $2}' && " 
+                "cat /sys/block/sda/device/vpd_pg80 2>/dev/null || cat /sys/block/sda/device/serial 2>/dev/null"
             )
-        # in case of subprocess error do:
-        # cdef bytes os_command_bytes = os_command.encode('utf-8')
-        # and use os_command_bytes
 
-        result = subprocess.check_output(os_command, shell=True).decode('utf-8')
-        lines = [line.strip() for line in result.splitlines() if line.strip()]
+        result = subprocess.check_output(os_command, shell=True).decode('utf-8', errors='ignore')
+        lines = [line.replace("  ", " ").replace("Name=", "").strip('\x00\x14 \t\n\r\v\f') for line in result.splitlines() if line.strip()]
 
-        cdef str cpu = lines[0].replace("Name=", "").replace("  ", " ")
-        cdef str gpu = lines[1].replace("Name=", "").replace("  ", " ")
+        cdef str cpu = lines[0]
+        cdef str gpu = lines[1]
         # could be multiple gpus
 
         len_lines = len(lines)