# The until loop

## Synopsis

    until <LIST1> ; do
      <LIST2>
    done

## Description

The until-loop is relatively simple in what it does: it executes the
[command list](../../syntax/basicgrammar.md#lists) `<LIST1>` and if the exit
code of it was **not** 0 (FALSE) it executes `<LIST2>`. This happens
again and again until `<LIST1>` returns TRUE.

This is exactly the opposite of the [while
loop](../../syntax/ccmd/while_loop.md).

:!: Like all loops (both `for`-loops, `while` and `until`), this loop
can be

-   terminated (broken) by the `break` command, optionally as `break N`
    to break `N` levels of nested loops
-   forced to immediately do the next iteration using the `continue`
    command, optionally as `continue N` analog to `break N`

### Return status

The return status is the one of the last command executed in `<LIST2>`,
or `0` (`TRUE`) if none was executed.

## Examples

## Portability considerations

## See also

-   Internal: [The while loop](../../syntax/ccmd/while_loop.md)