# Again Selector

When you push to try, the computed `try_task_config.json` is saved in a
history file under `~/.mozbuild/srcdirs/<srcdir hash>/history`. You can then
use the `again` selector to re-push any of your previously generated task
configs.

In the simple case, you can re-run your last try push with:

```shell
mach try again
```

If you want to re-push a task config a little further down the history stack,
first you need to figure out its index with:

```shell
mach try again --list
```

Then run:

```shell
mach try again --index <index>
```

Note that index `0` is always the most recent `try_task_config.json` in the
history. You can clear your history with:

```shell
mach try again --purge
```

Only the 10 most recent pushes will be saved in your history.