cpu data is only saved on command line option --save

vizex/cli.py

@@ -135,7 +135,7 @@ def dirs_files(sort: str, all: str, desc: str, path: str, alias: str) -> None:
                 metavar='command')
 @click.option(
     "--save",
-    help="Export your disk usage data into a CSV or JSON file:"
+    help="Export your disk/cpu usage data into a CSV or JSON file:"
     + "Takes a full path with a file name as an argument. "
     + "File type will be defined based on a <.type> of the filename"
 )
@@ -265,7 +265,7 @@ def disk_usage(arg, save, path, every,
             print('Battery not found!')
     elif arg == 'cpu':
         cpus = CPUFreq()
-        cpus.display_separately()
+        cpus.display_separately(filename=save)
     else:
         renderer = DiskUsage(
             path=path, exclude=exclude_list, details=details, every=every

vizex/vizexdu/cpu.py

@@ -35,7 +35,7 @@ def min_freq(self, minimum: int) -> None:
     def __init__(self) -> None:
         return
 
-    def display_separately(self, save=True) -> None:
+    def display_separately(self, filename="") -> None:
         os.system('cls' if os.name == 'nt' else 'clear')
         ch = HorizontalBarChart()
         ch.options.graph_color = 'white'
@@ -54,7 +54,7 @@ def display_separately(self, save=True) -> None:
                     current=i.current - self._min
                 )
 
-                if save:
+                if filename:
                     cpu = {
                         'user': [getpass.getuser()],
                         'cpu': [n],
@@ -63,7 +63,11 @@ def display_separately(self, save=True) -> None:
                         'usage': [percent]
                     }
 
-                    tools.save_to_csv(cpu, '~/cpus.csv')
+                    if (filename.split(".")[-1].lower()) == 'csv':
+                        tools.save_to_csv(cpu, filename)
+                    else:
+                        raise NameError("Not supported file type, please indicate "
+                                        + ".CSV at the end of the filename")
 
                 print()
 
@@ -95,4 +99,4 @@ def display_combined(self) -> None:
 
 if __name__ == '__main__':
     cpu_freq = CPUFreq()
-    cpu_freq.display_separately()
+    cpu_freq.display_separately("~/cpu.csv")