itchyny
e001deb4cf
The UTF-8 BOM was stripped only at the start of the parser stream, but jq feeds all input files into a single parser, so a BOM at the start of the second and later files reached the parser as content and failed with a confusing "Invalid numeric literal" error. Strip it in the file readers instead, at the start of each input file including stdin, and in jv_load_file. This also strips the BOM for raw input, so -R and --rawfile no longer yield a leading U+FEFF, and a BOM at the start of a -f program file or an imported module is now accepted rather than reported as a syntax error. In exchange, "\uFEFF1" | fromjson is now a parse error, since a U+FEFF inside a string is content rather than an encoding marker, and the dedicated "Malformed BOM" error is gone.
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
- Official Documentation: jqlang.org
- Try jq Online: play.jqlang.org
Installation
Prebuilt Binaries
Download the latest releases from the GitHub release page.
The platform-specific assets are standalone executables, not archives. On macOS and Linux,
rename the downloaded file to jq and make it executable with chmod +x jq.
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
- Questions & Help: Stack Overflow (jq tag)
- Chat & Community: Join us on Discord
- Wiki & Advanced Topics: Explore the Wiki
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