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@ -3,44 +3,46 @@
![Build](https://github.com/mikefarah/yq/workflows/Build/badge.svg) ![Docker Pulls](https://img.shields.io/docker/pulls/mikefarah/yq.svg) ![Github Releases (by Release)](https://img.shields.io/github/downloads/mikefarah/yq/total.svg) ![Go Report](https://goreportcard.com/badge/github.com/mikefarah/yq) ![CodeQL](https://github.com/mikefarah/yq/workflows/CodeQL/badge.svg)
a lightweight and portable command-line YAML, JSON, INI and XML processor. `yq` uses [jq](https://github.com/stedolan/jq) like syntax but works with yaml files as well as json, xml, ini, properties, csv and tsv. It doesn't yet support everything `jq` does - but it does support the most common operations and functions, and more is being added continuously.
A lightweight and portable command-line YAML, JSON, INI and XML processor. `yq` uses [jq](https://github.com/stedolan/jq) (a popular JSON processor) like syntax but works with yaml files as well as json, xml, ini, properties, csv and tsv. It doesn't yet support everything `jq` does - but it does support the most common operations and functions, and more is being added continuously.
yq is written in go - so you can download a dependency free binary for your platform and you are good to go! If you prefer there are a variety of package managers that can be used as well as Docker and Podman, all listed below.
yq is written in Go - so you can download a dependency free binary for your platform and you are good to go! If you prefer there are a variety of package managers that can be used as well as Docker and Podman, all listed below.
## Quick Usage Guide
Read a value:
### Basic Operations
**Read a value:**
```bash
yq '.a.b[0].c' file.yaml
```
Pipe from STDIN:
**Pipe from STDIN:**
```bash
yq '.a.b[0].c' < file.yaml
```
Update a yaml file, in place
**Update a yaml file in place:**
```bash
yq -i '.a.b[0].c = "cool"' file.yaml
```
Update using environment variables
**Update using environment variables:**
```bash
NAME=mike yq -i '.a.b[0].c = strenv(NAME)' file.yaml
```
Merge multiple files
### Advanced Operations
**Merge multiple files:**
```bash
# merge two files
yq -n 'load("file1.yaml") * load("file2.yaml")'
# merge using globs:
# note the use of `ea` to evaluate all the files at once
# instead of in sequence
# merge using globs (note: `ea` evaluates all files at once instead of in sequence)
yq ea '. as $item ireduce ({}; . * $item )' path/to/*.yml
```
Multiple updates to a yaml file
**Multiple updates to a yaml file:**
```bash
yq -i '
.a.b[0].c = "cool" |
@ -49,14 +51,22 @@ yq -i '
' file.yaml
```
Find and update an item in an array:
**Find and update an item in an array:**
```bash
yq '(.[] | select(.name == "foo") | .address) = "12 cat st"'
# Note: requires input file - add your file at the end
yq -i '(.[] | select(.name == "foo") | .address) = "12 cat st"' data.yaml
```
Convert JSON to YAML
**Convert between formats:**
```bash
# Convert JSON to YAML (pretty print)
yq -Poy sample.json
# Convert YAML to JSON
yq -o json file.yaml
# Convert XML to YAML
yq -o yaml file.xml
```
See [recipes](https://mikefarah.gitbook.io/yq/recipes) for more examples and the [documentation](https://mikefarah.gitbook.io/yq/) for more information.
@ -68,31 +78,31 @@ Take a look at the discussions for [common questions](https://github.com/mikefar
### [Download the latest binary](https://github.com/mikefarah/yq/releases/latest)
### wget
Use wget to download, gzipped pre-compiled binaries:
Use wget to download pre-compiled binaries. Choose your platform and architecture:
For instance, VERSION=v4.2.0 and BINARY=yq_linux_amd64
#### Compressed via tar.gz
**For Linux (example):**
```bash
wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY}.tar.gz -O - |\
tar xz && mv ${BINARY} /usr/local/bin/yq
```
# Set your platform variables (adjust as needed)
VERSION=v4.2.0
PLATFORM=linux_amd64
#### Plain binary
# Download compressed binary
wget https://github.com/mikefarah/yq/releases/download/${VERSION}/yq_${PLATFORM}.tar.gz -O - |\
tar xz && sudo mv yq_${PLATFORM} /usr/local/bin/yq
```bash
wget https://github.com/mikefarah/yq/releases/download/${VERSION}/${BINARY} -O /usr/local/bin/yq &&\
# Or download plain binary
wget https://github.com/mikefarah/yq/releases/download/${VERSION}/yq_${PLATFORM} -O /usr/local/bin/yq &&\
chmod +x /usr/local/bin/yq
```
#### Latest version
**Latest version (Linux AMD64):**
```bash
wget https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64 -O /usr/local/bin/yq &&\
chmod +x /usr/local/bin/yq
```
**Available platforms:** `linux_amd64`, `linux_arm64`, `linux_arm`, `linux_386`, `darwin_amd64`, `darwin_arm64`, `windows_amd64`, `windows_386`, etc.
### MacOS / Linux via Homebrew:
Using [Homebrew](https://brew.sh/)
```
@ -123,28 +133,31 @@ rm /etc/myfile.tmp
```
### Run with Docker or Podman
#### Oneshot use:
#### One-time use:
```bash
docker run --rm -v "${PWD}":/workdir mikefarah/yq [command] [flags] [expression ]FILE...
# Docker - process files in current directory
docker run --rm -v "${PWD}":/workdir mikefarah/yq '.a.b[0].c' file.yaml
# Podman - same usage as Docker
podman run --rm -v "${PWD}":/workdir mikefarah/yq '.a.b[0].c' file.yaml
```
Note that you can run `yq` in docker without network access and other privileges if you desire,
namely `--security-opt=no-new-privileges --cap-drop all --network none`.
**Security note:** You can run `yq` in Docker with restricted privileges:
```bash
podman run --rm -v "${PWD}":/workdir mikefarah/yq [command] [flags] [expression ]FILE...
docker run --rm --security-opt=no-new-privileges --cap-drop all --network none \
-v "${PWD}":/workdir mikefarah/yq '.a.b[0].c' file.yaml
```
#### Pipe in via STDIN:
#### Pipe data via STDIN:
You'll need to pass the `-i\--interactive` flag to docker:
You'll need to pass the `-i --interactive` flag to Docker/Podman:
```bash
# Process piped data
docker run -i --rm mikefarah/yq '.this.thing' < myfile.yml
```
```bash
# Same with Podman
podman run -i --rm mikefarah/yq '.this.thing' < myfile.yml
```
@ -340,7 +353,7 @@ gah install yq
- Supports yaml [front matter](https://mikefarah.gitbook.io/yq/usage/front-matter) blocks (e.g. jekyll/assemble)
- Colorized yaml output
- [Date/Time manipulation and formatting with TZ](https://mikefarah.gitbook.io/yq/operators/datetime)
- [Deeply data structures](https://mikefarah.gitbook.io/yq/operators/traverse-read)
- [Deep data structures](https://mikefarah.gitbook.io/yq/operators/traverse-read)
- [Sort keys](https://mikefarah.gitbook.io/yq/operators/sort-keys)
- Manipulate yaml [comments](https://mikefarah.gitbook.io/yq/operators/comment-operators), [styling](https://mikefarah.gitbook.io/yq/operators/style), [tags](https://mikefarah.gitbook.io/yq/operators/tag) and [anchors and aliases](https://mikefarah.gitbook.io/yq/operators/anchor-and-alias-operators).
- [Update in place](https://mikefarah.gitbook.io/yq/v/v4.x/commands/evaluate#flags)
@ -423,6 +436,27 @@ Flags:
Use "yq [command] --help" for more information about a command.
```
## Troubleshooting
### Common Issues
**PowerShell quoting issues:**
```powershell
# Use single quotes for expressions
yq '.a.b[0].c' file.yaml
# Or escape double quotes
yq ".a.b[0].c = \"value\"" file.yaml
```
### Getting Help
- **Check existing issues**: [GitHub Issues](https://github.com/mikefarah/yq/issues)
- **Ask questions**: [GitHub Discussions](https://github.com/mikefarah/yq/discussions)
- **Documentation**: [Complete documentation](https://mikefarah.gitbook.io/yq/)
- **Examples**: [Recipes and examples](https://mikefarah.gitbook.io/yq/recipes)
## Known Issues / Missing Features
- `yq` attempts to preserve comment positions and whitespace as much as possible, but it does not handle all scenarios (see https://github.com/go-yaml/yaml/tree/v3 for details)
- Powershell has its own...[opinions on quoting yq](https://mikefarah.gitbook.io/yq/usage/tips-and-tricks#quotes-in-windows-powershell)