---
name: "filecheck"
section: "1"
platform: "linux"
package: "filecheck"
version: "0.0.24+dfsg-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/filecheck"
---

# filecheck(1)

Attempt to reimplement LLVM's FileCheck using Python.

## NAME

**filecheck** - Attempt to reimplement LLVM's FileCheck using Python.

## SYNOPSIS

```
 filecheck <check-file> [<options>]
```

## DESCRIPTION

**Filecheck is a Python implementation for LLVM LIT integration tests** **integration tests. The package is useful to people who are not** **familiar with the LLVM infrastructure and Python-based projects** **that would prefer to not have to build anything from LLVM's source** **code in their CI process.**

## OPTIONS

- **--match-full-lines**

  **- Require all positive matches to cover an entire input line.** **Allows leading and trailing whitespace if --strict-whitespace** **is not also passed.**

- **--strict-whitespace**

  **- Do not treat all horizontal whitespace as equivalent**

- **--check-prefix**

  **- Allows changing a default match keyword CHECK to an arbitrary keyword**

- **--implicit-check-not**

  **- Adds implicit CHECK-NOT check that works on every input line**

- **--help**

  **- Display available options**

## EXAMPLES

**The following check file without--strict-whitespace.check:**

```
    CHECK: String1   String2           String3
```

**will pass on any of the following inputs:**

```
    printf "String1 String2 String3" | filecheck without--strict-whitespace.check
    printf "String1  String2          String3" | filecheck without--strict-whitespace.check
    printf "   String1 String2   String3 " | filecheck without--strict-whitespace.check
```

**Adding --strict-whitespace disables this behavior.**

**The following check file without--match-full-lines.check:**

```
    CHECK: tring1
    CHECK: ring2
    CHECK: String3
```

**will pass on the following input:**

```
    printf "String10tring20tring3" | filecheck without--match-full-lines.check
```

**The --match-full-lines disables this behavior.**

## REPORTING BUGS

**To report a bug please visit filecheck issues tracking system at:** **https://github.com/mull-project/FileCheck.py/issues**

## AUTHORS

**This manual page was written by Bo YU \<tsu.yubo@gmail.com\> for the Debian project** **(but may be used by others).**