### Pipe status
In bash, we use
```plaintext
echo "${PIPESTATUS[@]}"
```
for an array of exit statuses of processes in a pipe. For example
```plaintext
false | true | false | true | true
echo "${PIPESTATUS[@]}"
# outputs: 1 0 1 0 0
```
(In ZshSh we use `pipestatus` (lowercase) instead.)