Update shell-intro.md

2023-06-28 15:36:54 +08:00 · 2023-06-28 15:36:54 +08:00 · a843706890
parent 4a924c7d89
commit a843706890
1 changed files with 2 additions and 1 deletions
--- a/docs/cs-basics/operating-system/shell-intro.md
+++ b/docs/cs-basics/operating-system/shell-intro.md
@ -406,7 +406,8 @@ done

 ```shell
 #!/bin/bash
-for((i=1;i<=5;i++));do
+length=5
+for((i=1;i<=length;i++));do
    echo $i;
 done;
 ```