Help for this page

Select Code to Download

Select or download this
```
echo a{1..3}
```
Select or download this
```
a1 a2 a3
```
Select or download this
```
echo > a1; ls a{1..3}
```

Select or download this

ls: a2: No such file or directory
ls: a3: No such file or directory
a1

Select or download this
```
shopt -s extglob 
echo a@(1|2|3)
```
Select or download this
```
a1
```