I am trying to loop through filenames within a directory so I can perform an operation on each.

I am able to loop through just 10 filenames if I use:

```
var=($(ls directory))
for k in {1..10}
do
    echo ${var[$k]}
done

```

Which gives me the first 10 filenames in my directory. However, I want to loop through them all.

If I do: 

```
length=($(ls directory -1 | wc -l))

```

I get the length (for this example, it is 62)

So when I combine everything together:

```
var=($(ls directory))
length=($(ls directory -1 | wc -l))
for k in {1..$length} 
do
    echo ${var[$k]}
done

```

I get the error 'syntax error: operand expected (error token is "{1..62}")

Any help to fix this, or a better solution would be greatly appreciated!