macOS
brew install gocrlocal Homebrew formula metadata
sudo port install gocrMacPorts ports tree · graphics/gocr/Portfile · ソース: api.github.com
brew
gocr のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。
インストール
brew install gocrlocal Homebrew formula metadata
sudo port install gocrMacPorts ports tree · graphics/gocr/Portfile · ソース: api.github.com
sudo dnf install gocrFedora Rawhide package metadata · gocr · ソース: dl.fedoraproject.org
nix profile install nixpkgs#gocrnixpkgs package indexes · pkgs/by-name/go/gocr/package.nix · ソース: api.github.com
sudo pacman -S gocrArch Linux sync databases · gocr · ソース: geo.mirror.pkgbuild.com
sudo zypper install gocropenSUSE Tumbleweed package metadata · gocr · ソース: download.opensuse.org
概要
Optical Character Recognition (OCR), converts images back to text
履歴
GOCR, also known as JOCR on SourceForge, is a command-line optical character recognition program by Joerg Schulenburg. It converts scanned image files back into text and represents an older Unix-style OCR tool that stayed useful enough to remain packaged across many systems.
The official GOCR page says Schulenburg started the program, led the SourceForge developer team, and continued maintaining the package at a low time base after 2010. The site explains the dual naming: the program's original and internal name is GOCR, while the SourceForge project used JOCR because the gocr project name was unavailable there.
The SourceForge-era history is visible in the official news stream: 0.3.0 appeared in December 2000, libgocr was made publicly available in April 2001, 0.37 arrived in August 2002, and the 0.40 through 0.49 series carried the project through the 2005 to 2010 period. Later releases 0.50, 0.51, and 0.52 were announced from the maintainer site rather than always being uploaded to SourceForge.
GOCR's adoption pattern is classic pre-GitHub free software: SourceForge hosting, CVS development, tarball releases, mailing-list support, and downstream packaging. The official download page mentions RPMs, Debian packages, Windows binaries, OS/2 packages, and SourceForge source tarballs.
The batch package metadata lists GOCR in Homebrew, Debian, Fedora, MacPorts, Nix, Arch, Ubuntu, and openSUSE package sets. That broad downstream footprint matters more than upstream velocity: OCR users and scanning frontends kept relying on a small C command-line engine that packagers could build and ship.
GOCR is used from the command line to read supported image formats and emit text. The official page notes that it can be used with different frontends and can open many image formats, with additional formats handled through external tools such as NetPBM.
The project is best understood as a lightweight OCR engine and utility for scanned text, not a modern machine-learning OCR stack. It is most useful where scriptability, old-format support, and small dependency surfaces matter.
Package nerds care about GOCR because it is a living fossil of early SourceForge packaging culture: CVS, tarballs, distro patches, optional graphical frontends, and long-lived formulae. It shows how a quiet C utility can survive for decades because it is easy for distributions to keep carrying.
Its GOCR/JOCR naming split is also a small lesson in package identity: upstream command names, project-hosting names, tarball names, and distro package names do not always line up cleanly.
セキュリティ状態
broad file, network, media, or database tool signal.
リスク blue · 信頼度 中 · tool
エージェントに無人実行させる前に、このツールが平文の認証情報を読むか、リモート状態を書き込むか、成果物を公開するか、プラグインを起動するかを確認してください。
実行可能ファイル
| コマンド | 種類 | 公開範囲 | メモ |
|---|---|---|---|
gocr | cli | グローバル実行可能ファイル | |
gocr.tcl | cli | グローバル実行可能ファイル |
鮮度
これらの信号は、ページ生成時期、パッケージマネージャの活動、上流リリース比較を分けて示します。バージョン遅れは、証拠 URL と比較可能なバージョンがある場合だけ警告されます。
https://wasd.urz.uni-magdeburg.de/jschulen/ocr/
インストールメタデータ
| パッケージキー | brew:gocr |
|---|---|
| バージョン | 0.52 |
| パッケージマネージャ | Homebrew |
| パッケージマネージャページ | https://formulae.brew.sh/formula/gocr |
| ホームページ | https://wasd.urz.uni-magdeburg.de/jschulen/ocr/ |
| リポジトリ | https://sourceforge.net/p/jocr/code |
| 上流ドキュメント | https://jocr.sourceforge.net/ |
| ライセンス | GPL-2.0-or-later |
| ソースアーカイブ | https://wasd.urz.uni-magdeburg.de/jschulen/ocr/gocr-0.52.tar.gz |
| 最終更新 | 2026-06-22T19:58:33+02:00 |
| Pulse | updated |
| 依存関係 | jpeg-turbo, netpbm |
| Bottle | 利用可能 (対象 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-install | 未定義 |
| サービス | 宣言なし |
レジストリ情報
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | gocr |
| Aliases |
|
| Version Scheme | 0 |
| Revision | 2 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | yes |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
ソースデータベース一致
一致は外部パッケージマネージャインデックスから取得され、ローカルの Automic Vault パッケージリンクとは分けて表示されます。
gocr 0.52-6.1+b1
Command line OCR
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install gocrgocr-tk 0.52-6.1
tcl/tk wrapper around gocr
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install gocr-tklibpgm2asc-dev 0.52-6.1+b1
Command line OCR - development files
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install libpgm2asc-devlibpgm2asc0.52t64 0.52-6.1+b1
Command line OCR - shared library
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install libpgm2asc0.52t64gocr
nix profile install nixpkgs#gocrgocr 0.52-6.1build1
Command line OCR
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install gocrgocr-tk 0.52-6.1build1
tcl/tk wrapper around gocr
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install gocr-tklibpgm2asc-dev 0.52-6.1build1
Command line OCR - development files
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install libpgm2asc-devlibpgm2asc0.52t64 0.52-6.1build1
Command line OCR - shared library
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo apt install libpgm2asc0.52t64gocr 0.52-18.fc44
GNU Optical Character Recognition program
sudo dnf install gocrgocr 0.52-3
OCR (Optical Character Recognition) program, which converts scanned images of text back to text files
https://www-e.uni-magdeburg.de/jschulen/ocr/
sudo pacman -S gocrgocr 0.52-3.10
Optical Character Recognition Program
https://www-e.uni-magdeburg.de/jschulen/ocr/index.html
sudo zypper install gocrgocr-gui 0.52-3.10
Optical Character Recognition Program - Basic Graphical Interface
https://www-e.uni-magdeburg.de/jschulen/ocr/index.html
sudo zypper install gocr-guigocr
sudo port install gocrソース経路
このページは scripts/generate-pkg-sqlite.py が生成した非公開のパッケージ SQLite アーティファクトから av-web によって提供されます。
View the package source record on GitHub.