# Key binding
By default, Atuin will rebind both Ctrl-r and the up arrow.
You can also disable either the up-arrow or Ctrl-r bindings individually, by passing
`--disable-up-arrow` or `-disable-ctrl-r` to the call to `atuin init`:
```
# Bind ctrl-r but not up arrow
eval "$(atuin init zsh --disable-up-arrow)"
# Bind up-arrow but not ctrl-r
eval "$(atuin init zsh --disable-ctrl-r)"
```
If you do not want either key to be bound, either pass both `--disable` arguments, or set the
environment varuable `ATUIN_NOBIND` to any value before the call to `atuin init`:
```
## Do not bind any keys
# Either:
eval "$(atuin init zsh --disable-up-arrow --disable-ctrl-r)"
# Or:
export ATUIN_NOBIND="true"
eval "$(atuin init zsh)"
```
You can then choose to bind Atuin if needed, do this after the call to init.
# zsh
Atuin defines the ZLE widget "\_atuin_search_widget"
```
export ATUIN_NOBIND="true"
eval "$(atuin init zsh)"
bindkey '^r' _atuin_search_widget
# depends on terminal mode
bindkey '^[[A' _atuin_search_widget
bindkey '^[OA' _atuin_search_widget
```
# bash
```
export ATUIN_NOBIND="true"
eval "$(atuin init bash)"
# bind to ctrl-r, add any other bindings you want here too
bind -x '"\C-r": __atuin_history'
```
# fish
```
set -gx ATUIN_NOBIND "true"
atuin init fish | source
# bind to ctrl-r in normal and insert mode, add any other bindings you want here too
bind \cr _atuin_search
bind -M insert \cr _atuin_search
```