# replacing last command and execute it

For example

```
$ echo "hello world world world"                   
hello world world world
```

If you want to replace `world` with `universe` you can do

```
# If you use ZSH you can press `tab` at the end of the line and it will replace
# the whole line with the actuall command
$ ^world^universe
$ echo "hello universe world world"
```

As you can see, it only replace the first matching word.

If you want it to replace the whole match:

```
# zsh
$ ^world^universe^:G

# bash
$^world^universe^&
```

**Don't use it in production**\
I tend to use `fc` command which allow me to edit the command in my editor first


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