diff --git a/linux基础/生成大文件.md b/linux基础/生成大文件.md
new file mode 100644
index 0000000..073b31a
--- /dev/null
+++ b/linux基础/生成大文件.md
@@ -0,0 +1,3 @@
+```shell
+dd if=/dev/zero of=a.txt bs=1M count=500
+```
\ No newline at end of file