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brew

flex mit Homebrew, apk, apt, dnf, MacPorts, Nix, pacman, zypper installieren

Prüfe Installationswege, Executables, Metadaten und Sicherheitshinweise für flex in AI-Agent-Workflows.

InstallationsbefehlSicherheitshinweise

Installation

Weitere Installationsbefehle

macOS

Homebrewverifiziert · 100%
brew install flex

local Homebrew formula metadata

MacPortsverifiziert · 94%
sudo port install flex

MacPorts ports tree · devel/flex/Portfile · Quelle: api.github.com

Linux

Alpine Linux apkverifiziert · 92%
sudo apk add flex

Alpine Linux edge package indexes · flex · Quelle: dl-cdn.alpinelinux.org

Debian aptverifiziert · 92%
sudo apt install flex

Debian stable package indexes · flex · Quelle: deb.debian.org

Fedora dnfverifiziert · 92%
sudo dnf install flex

Fedora Rawhide package metadata · flex · Quelle: dl.fedoraproject.org

Nixverifiziert · 92%
nix profile install nixpkgs#flex

nixpkgs package indexes · flex · Quelle: raw.githubusercontent.com

Arch Linux pacmanverifiziert · 92%
sudo pacman -S flex

Arch Linux sync databases · flex · Quelle: geo.mirror.pkgbuild.com

openSUSE zypperverifiziert · 92%
sudo zypper install flex

openSUSE Tumbleweed package metadata · flex · Quelle: download.opensuse.org

Überblick

Paketzusammenfassung

Fast Lexical Analyzer, generates Scanners (tokenizers)

Befehle und Aliase

  • flex
  • flex++
  • lex

Verlauf

Projektgeschichte und Nutzung

flex is the fast lexical analyzer generator, the long-running free-software successor in the lex family. It generates scanners for recognizing lexical patterns in text and remains a foundational build-time package for C, C++, parser, compiler, and language-tooling stacks.

Projektgeschichte

The upstream README describes flex as a tool for generating scanners and notes that the code derives from software contributed to Berkeley by Vern Paxson. Its distribution includes user documentation, examples, tests, internationalization files, and libfl support.

The project moved its main codebase, issue tracking, pull requests, and source releases to GitHub during the 2.6.1 release cycle in 2016, after earlier SourceForge-era mailing-list infrastructure. The 2.6.x NEWS entries record modernization work around generated scanners, portability, cross compilation, tests, build tooling, and release artifacts.

Adoptionsgeschichte

flex is a standard dependency in Unix-like development environments because many source packages generate or ship scanners built from `.l` files. The supplied package metadata records availability across apk, Homebrew, Debian, Fedora, MacPorts, Nix, pacman, Ubuntu, and zypper, reflecting its role as a baseline developer tool rather than a niche application.

Wie es verwendet wird

Users write lexical rules and run flex to generate C or C++ scanner code. The generated scanner is then compiled into a program, commonly alongside parser generators and build systems for compilers, interpreters, protocol tools, data importers, and other text-processing software.

Package maintainers care about whether a release tarball includes generated intermediate files, which flex version built the distributed scanner, and whether cross-compilation and bootstrap paths work. The official NEWS repeatedly calls out these build and portability concerns.

Warum Paket-Nerds sich dafür interessieren

flex is one of the canonical examples of a package that is both a user-facing command and a build dependency. It shows up in dependency graphs far from compiler projects because scanner generation is a common prebuild step, and its own bootstrap story matters to source-based distributions.

Zeitleiste

  • 1980s: flex originates from Berkeley-contributed scanner-generator work by Vern Paxson.
  • 2013: westes/flex GitHub repository created.
  • 2016: 2.6.1 announces GitHub as the project host for code, releases, issues, and pull requests.
  • 2016: 2.6.3 improves cross-compilation and bootstrap behavior.
  • 2017: 2.6.4 stable release includes portability, build, scanner, documentation, and test-suite fixes.

Related projects

  • lex is the historical Unix scanner generator lineage to which flex is related.
  • Bison, yacc-family parser generators, autotools, m4, and libfl are common adjacent tools in flex build and usage contexts.
  • SourceForge remains relevant for flex mailing-list archives even though the codebase and releases are on GitHub.

Sicherheitslage

Risikostufe: grün

narrow executable package without higher-risk signals.

Risikoklassifikator

grün Risiko · niedrig Konfidenz · appliance

Warum

  • narrow executable package without higher-risk signals

Signale

  • metadata:no-higher-risk-signals

Installationsverhalten

  • In den Formelmetadaten ist kein Homebrew-Post-install-Hook erfasst.
  • Homebrew-Bottle-Metadaten sind für 13 Plattformziele verfügbar.
  • Installiert mit 1 Laufzeitabhängigkeiten.
  • Build-Metadaten listen 1 Build-Abhängigkeiten.

Empfohlene Prüfung

Prüfe vor unbeaufsichtigter Agent-Nutzung, ob das Tool Klartext-Credentials liest, Remote-Zustand schreibt, Artefakte veröffentlicht oder Plugins ausführt.

Executables

Installierte Executables

BefehlArtSichtbarkeitHinweis
flexcliglobales Executable
flex++cliglobales Executable
lexcliglobales Executable

Aktualität

Version und Aktualität

Diese Signale trennen das Alter der Seitengenerierung, Aktivität des Paketmanagers und Upstream-Release-Vergleich. Versionsrückstand wird nur gemeldet, wenn eine Evidenz-URL und vergleichbare Versionen vorhanden sind.

Seite generiert2026-07-10
Manager-Version2.6.4
Manager aktualisiert2026-06-22
lokale DatenOK
Upstreamnot checked
neueste erkannte Versionnicht erkannt

https://github.com/westes/flex

Installationsmetadaten

Paketmetadaten

Paketschlüsselbrew:flex
Version2.6.4
PaketmanagerHomebrew
Paketmanager-Seitehttps://formulae.brew.sh/formula/flex
Homepagehttps://github.com/westes/flex
Repositoryhttps://github.com/westes/flex
Upstream-Dokumentationhttps://westes.github.io/flex/manual
LizenzBSD-2-Clause
Quellarchivhttps://github.com/westes/flex/releases/download/v2.6.4/flex-2.6.4.tar.gz
Zuletzt aktualisiert2026-06-22T14:03:20-07:00
Pulseupdated
Abhängigkeitengettext
Build-Abhängigkeitenhelp2man
Von macOS bereitgestellte Bibliothekenm4
Bottleverfügbar (auf arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura, x86_64_linux)
Homebrew post-installnicht definiert
Dienstkeiner deklariert

Registry-Fakten

Details aus der Quelldatenbank

Source DatabaseHomebrew formula API
Taphomebrew/core
Full Nameflex
Version Scheme0
Revision2
Head VersionHEAD
Requirements
  • macos
Bottle Stable Root URLhttps://ghcr.io/v2/homebrew/core
Deprecatedno
Disabledno
Keg Onlyyes
URL Keys
  • head
  • stable

Source-Datenbank-Treffer

Andere Paketmanager-Einträge

Treffer stammen aus externen Paketmanager-Indizes und bleiben von lokalen Automic-Vault-Paketlinks getrennt.

Debian apt95%

flex 2.6.4-8.2+b4

fast lexical analyzer generator

https://github.com/westes/flex

sudo apt install flex
  • Section: devel
  • Architecture: amd64
  • Source Package: flex
  • 2 Abhängigkeiten
  • 6 optionale Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Debian stable package indexes · deb.debian.org · Debian stable package indexes: flex from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Debian apt95%

flex-doc 2.6.4-8.2

Documentation for flex (a fast lexical analyzer generator)

https://github.com/westes/flex

sudo apt install flex-doc
  • Section: doc
  • Architecture: all
  • Source Package: flex
  • normalized package name match
  • Abgeglichen nach: Flex
Debian stable package indexes · deb.debian.org · Debian stable package indexes: flex-doc from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Debian apt95%

libfl-dev 2.6.4-8.2+b4

static library for flex (a fast lexical analyzer generator)

https://github.com/westes/flex

sudo apt install libfl-dev
  • Section: libdevel
  • Architecture: amd64
  • Source Package: flex
  • 2 Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Debian stable package indexes · deb.debian.org · Debian stable package indexes: libfl-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Debian apt95%

libfl2 2.6.4-8.2+b4

SHARED library for flex (a fast lexical analyzer generator)

https://github.com/westes/flex

sudo apt install libfl2
  • Section: libs
  • Architecture: amd64
  • Source Package: flex
  • 1 Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Debian stable package indexes · deb.debian.org · Debian stable package indexes: libfl2 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Nix95%

flex

nix profile install nixpkgs#flex
  • normalized package name match
  • Abgeglichen nach: Flex
nixpkgs package indexes · raw.githubusercontent.com · nixpkgs package indexes: flex from https://raw.githubusercontent.com/NixOS/nixpkgs/master/pkgs/top-level/all-packages.nix
Ubuntu apt95%

flex 2.6.4-8.2build1

fast lexical analyzer generator

https://github.com/westes/flex

sudo apt install flex
  • Section: devel
  • Architecture: amd64
  • 2 Abhängigkeiten
  • 6 optionale Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: flex from https://archive.ubuntu.com/ubuntu/dists/noble/main/binary-amd64/Packages.gz
Ubuntu apt95%

flex-doc 2.6.4-8.2build1

Documentation for flex (a fast lexical analyzer generator)

https://github.com/westes/flex

sudo apt install flex-doc
  • Section: doc
  • Architecture: all
  • Source Package: flex
  • normalized package name match
  • Abgeglichen nach: Flex
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: flex-doc from https://archive.ubuntu.com/ubuntu/dists/noble/main/binary-amd64/Packages.gz
Ubuntu apt95%

libfl-dev 2.6.4-8.2build1

static library for flex (a fast lexical analyzer generator)

https://github.com/westes/flex

sudo apt install libfl-dev
  • Section: libdevel
  • Architecture: amd64
  • Source Package: flex
  • 2 Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libfl-dev from https://archive.ubuntu.com/ubuntu/dists/noble/main/binary-amd64/Packages.gz
Ubuntu apt95%

libfl2 2.6.4-8.2build1

SHARED library for flex (a fast lexical analyzer generator)

https://github.com/westes/flex

sudo apt install libfl2
  • Section: libs
  • Architecture: amd64
  • Source Package: flex
  • 1 Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libfl2 from https://archive.ubuntu.com/ubuntu/dists/noble/main/binary-amd64/Packages.gz
apk95%

flex 2.6.4-r8

A tool for generating text-scanning programs

https://github.com/westes/flex

sudo apk add flex
  • License: BSD-2-Clause
  • Architecture: x86_64
  • Source Package: flex
  • 1 Abhängigkeiten
  • 1 stellt bereit
  • normalized package name match
  • Abgeglichen nach: Flex
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: flex from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
apk95%

flex-dev 2.6.4-r8

A tool for generating text-scanning programs (development files)

https://github.com/westes/flex

sudo apk add flex-dev
  • License: BSD-2-Clause
  • Architecture: x86_64
  • Source Package: flex
  • 1 Abhängigkeiten
  • normalized package name match
  • Abgeglichen nach: Flex
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: flex-dev from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
apk95%

flex-doc 2.6.4-r8

A tool for generating text-scanning programs (documentation)

https://github.com/westes/flex

sudo apk add flex-doc
  • License: BSD-2-Clause
  • Architecture: x86_64
  • Source Package: flex
  • normalized package name match
  • Abgeglichen nach: Flex
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: flex-doc from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
apk95%

flex-libs 2.6.4-r8

A tool for generating text-scanning programs (libraries)

https://github.com/westes/flex

sudo apk add flex-libs
  • License: BSD-2-Clause
  • Architecture: x86_64
  • Source Package: flex
  • 1 Abhängigkeiten
  • 1 stellt bereit
  • normalized package name match
  • Abgeglichen nach: Flex
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: flex-libs from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
dnf95%

flex 2.6.4-24.fc44

A tool for generating scanners (text pattern recognizers)

https://github.com/westes/flex

sudo dnf install flex
  • License: BSD-3-Clause-flex AND GPL-3.0-or-later WITH Autoconf-exception-generic-3.0 AND GPL-3.0-or-later WITH Bison-exception-2.2 AND GPL-3.0-or-later WITH
  • Category: Unspecified
  • Architecture: x86_64
  • Source Package: flex
  • 4 Abhängigkeiten
  • 2 stellt bereit
  • normalized package name match
  • Abgeglichen nach: Flex
Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: flex from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst
dnf95%

libfl-devel 2.6.4-24.fc44

Development files for the flex scanner generator

https://github.com/westes/flex

sudo dnf install libfl-devel
  • License: BSD-3-Clause-flex AND GPL-3.0-or-later WITH Autoconf-exception-generic-3.0 AND GPL-3.0-or-later WITH Bison-exception-2.2 AND GPL-3.0-or-later WITH
  • Category: Unspecified
  • Architecture: i686
  • Source Package: flex
  • 2 Abhängigkeiten
  • 1 stellt bereit
  • normalized package name match
  • Abgeglichen nach: Flex
Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: libfl-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst
dnf95%

libfl-static 2.6.4-24.fc44

Static libraries for the flex scanner generator

https://github.com/westes/flex

sudo dnf install libfl-static
  • License: BSD-3-Clause-flex AND GPL-3.0-or-later WITH Autoconf-exception-generic-3.0 AND GPL-3.0-or-later WITH Bison-exception-2.2 AND GPL-3.0-or-later WITH
  • Category: Unspecified
  • Architecture: i686
  • Source Package: flex
  • 3 stellt bereit
  • normalized package name match
  • Abgeglichen nach: Flex
Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: libfl-static from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

Paketgraph

Links stammen aus dem lokalen Paketbeziehungsgraph, Ergänzungen, Abhängigkeitskanten, Ecosystem-Matches und Paket-Hub-Mitgliedschaft.

Verwandte Tools

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Gleicher Workflow

  • re2cShares av.db curated category or tags: cli, compiler-tools, developer-tools, lexer-generator.
  • quexShares av.db curated category or tags: c, cli, developer-tools, lexer-generator.
  • jflexShares av.db curated category or tags: cli, compiler-tools, developer-tools, lexer-generator.
  • jasminShares av.db curated category or tags: cli, compiler-tools, developer-tools.
  • litShares av.db curated category or tags: cli, compiler-tools, developer-tools.
  • treeccShares av.db curated category or tags: cli, compiler-tools, developer-tools.

Quellspur

Aus Repository-Daten generiert

Diese Seite wird von av-web aus dem privaten Paket-SQLite-Artefakt bereitgestellt, das scripts/generate-pkg-sqlite.py erstellt.

Verwendete Quellen

  • Geiger risk classifier
  • Nucleus package database
  • av.db category and tag curation
  • cross-ecosystem install command graph
  • curated package history
  • external package-manager database matches
  • package relationship graph
  • package version freshness
  • package-page enrichment