> For the complete documentation index, see [llms.txt](https://kawsing.gitbook.io/opensystem/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kawsing.gitbook.io/opensystem/andoid-shou-ji/untitled-4/shell-script/for-hui-quan-1100.md).

# for 迴圈 1\~100

## 測試指令 seq 

```
seq 1 100
```

```
echo {1..100}
```

### 正規for寫法

```
for ((i=1; i<=100; i++)); do echo $i ; done
```

&#x20;使用 seq 與 {a..b}

```
for i in $(seq 1 100); do echo $i ; done
for i in {1..100}; do echo $i ; done
```

印出奇數

```
for i in $(seq 1 2 100); do echo $i ; done
```

印出偶數

```
for i in {2..100..2}; do echo $i ; done
```