doc: Update sed.md (#589)

jaywcjlove · Jul 10, 2024 · 7c11c46 · 7c11c46
1 parent 91bc78c
commit 7c11c46
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/command/sed.md b/command/sed.md
@@ -172,9 +172,10 @@ sed '2,$d' file
 sed '$d' file
 ```
 
-删除文件中所有开头是test的行：
+删除文件中所有开头是test的行(d写外边效果一样)：
 
 ```shell
+sed '/^test/d' file
 sed '/^test/'d file
 ```