itchyny a829f678f3 Fix one-byte over-read in BASE64_DECODE_TABLE (#3547)
The table was declared with 255 entries but indexed by an unsigned
char, so the decoder would read one byte past the array for input
bytes equal to 0xFF. Through jq's normal input paths the over-read
is unreachable because invalid UTF-8 bytes are normalized to U+FFFD
before reaching @base64d, but the table is still wrong at the C
level and reachable by libjq callers that construct strings via
the C API without UTF-8 validation.
2026-05-23 09:36:15 +09:00
2023-07-16 00:02:46 -05:00
2025-07-31 23:00:24 +09:00
2023-06-13 20:01:20 +09:00
2025-12-12 10:54:39 +01:00
2016-02-24 00:39:56 -08:00
2023-06-19 00:07:29 -05:00

jq

jq is a lightweight and flexible command-line JSON processor akin to sed,awk,grep, and friends for JSON data. It's written in portable C and has zero runtime dependencies, allowing you to easily slice, filter, map, and transform structured data.

Documentation

Installation

Prebuilt Binaries

Download the latest releases from the GitHub release page.

Docker Image

Pull the jq image to start quickly with Docker.

Run with Docker

Example: Extracting the version from a package.json file
docker run --rm -i ghcr.io/jqlang/jq:latest < package.json '.version'
Example: Extracting the version from a package.json file with a mounted volume
docker run --rm -i -v "$PWD:$PWD" -w "$PWD" ghcr.io/jqlang/jq:latest '.version' package.json

Building from source

Dependencies

  • libtool
  • make
  • automake
  • autoconf

Instructions

git submodule update --init    # if building from git to get oniguruma
autoreconf -i                  # if building from git
./configure --with-oniguruma=builtin
make clean                     # if upgrading from a version previously built from source
make -j8
make check
sudo make install

Build a statically linked version:

make LDFLAGS=-all-static

If you're not using the latest git version but instead building a released tarball (available on the release page), skip the autoreconf step, and flex or bison won't be needed.

Cross-Compilation

For details on cross-compilation, check out the GitHub Actions file and the cross-compilation wiki page.

Community & Support

License

jq is released under the MIT License. jq's documentation is licensed under the Creative Commons CC BY 3.0. jq uses parts of the open source C library "decNumber", which is distributed under ICU License

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Readme BSD-2-Clause, MIT
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