# quit command

## Syntax

    quit status

status = numerical exit status (optional)

## Examples

``` LAMMPS
quit
if "$n > 10000" then "quit 1"
```

## Description

This command causes LAMMPS to exit, after shutting down all output
cleanly.

It can be used as a debug statement in an input script, to terminate the
script at some intermediate point.

It can also be used as an invoked command inside the \"then\" or
\"else\" portion of an [if](if) command.

The optional status argument is an integer which signals the return
status to a program calling LAMMPS. A return status of 0 usually
indicates success. A status != 0 is failure, where the specified value
can be used to distinguish the kind of error, e.g. where in the input
script the quit was invoked. If not specified, a status of 0 is
returned.

## Restrictions

> none

## Related commands

[if](if)

## Default

none