Update Shell.md

2019-08-26 23:42:21 +08:00 · 2019-08-26 23:42:21 +08:00 · 1ecb96da0f
parent c3b7445b02
commit 1ecb96da0f
1 changed files with 1 additions and 1 deletions
--- a/docs/operating-system/Shell.md
+++ b/docs/operating-system/Shell.md
@ -290,7 +290,7 @@ for i in ${array[@]};do echo $i ;done # 遍历数组，数组元素为空，没
 a=3;b=3;
 val=`expr $a + $b`
 #输出：Total value : 6
-echo "Total value : $val
+echo "Total value : $val"
 ```