diff --git a/tools/Windows命令行cmd的空格替换.md b/tools/Windows命令行cmd的空格替换.md
new file mode 100644
index 0000000..a4ce536
--- /dev/null
+++ b/tools/Windows命令行cmd的空格替换.md
@@ -0,0 +1,22 @@
+### Windows空格替换  
+
+```
+%COMMONPROGRAMFILES:~23,-5%
+%ProgramFiles:~10,-5%
+%CommonProgramFiles:~10,-18%
+%COMMONPROGRAMFILES:~23,1%
+%ProgramFiles:~10,1%
+%CommonProgramFiles:~10,1%
+%path:~10,1%
+%PROCESSOR_IDENTIFIER:~7,1%
+
+```
+> 可通过 echo查看环境变量，然后找有空格的，从而造成其他命令通用的替换  
+
+![](../img/windowsapce.png)
+
+---------
+
+还有另一种：形如这种`n^e^t^ u^s^e^r`  
+![](../img/windowschar.png)
+