mirror of
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128 lines
4.0 KiB
Markdown
128 lines
4.0 KiB
Markdown
# yq
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[](https://travis-ci.com/mikefarah/yq/)   
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a lightweight and portable command-line YAML processor
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The aim of the project is to be the [jq](https://github.com/stedolan/jq) or sed of yaml files.
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## Install
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### On MacOS:
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```
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brew install yq
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```
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### On Ubuntu and other Linux distros supporting `snap` packages:
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```
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snap install yq
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```
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#### Snap notes
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`yq` installs with with [_strict confinement_](https://docs.snapcraft.io/snap-confinement/6233) in snap, this means it doesn't have direct access to root files. To read root files you can:
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```
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sudo cat /etc/myfile | yq -r - somecommand
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```
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And to write to a root file you can either use [sponge](https://linux.die.net/man/1/sponge):
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```
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sudo cat /etc/myfile | yq -r - somecommand | sudo sponge /etc/myfile
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```
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or write to a temporary file:
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```
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sudo cat /etc/myfile | yq -r - somecommand | sudo tee /etc/myfile.tmp
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sudo mv /etc/myfile.tmp /etc/myfile
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rm /etc/myfile.tmp
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```
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### On Ubuntu 16.04 or higher from Debian package:
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```
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sudo add-apt-repository ppa:rmescandon/yq
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sudo apt update
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sudo apt install yq -y
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```
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### or, [Download latest binary](https://github.com/mikefarah/yq/releases/latest) or alternatively:
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```
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GO111MODULE=on go get github.com/mikefarah/yq/v3
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```
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## Run with Docker
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Oneshot use:
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```bash
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docker run --rm -v ${PWD}:/workdir mikefarah/yq yq [flags] <command> FILE...
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```
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Run commands interactively:
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```bash
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docker run --rm -it -v ${PWD}:/workdir mikefarah/yq sh
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```
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It can be useful to have a bash function to avoid typing the whole docker command:
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```bash
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yq() {
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docker run --rm -i -v ${PWD}:/workdir mikefarah/yq yq $@
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}
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```
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## Features
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- Written in portable go, so you can download a lovely dependency free binary
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- Deep read a yaml file with a given path
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- Update a yaml file given a path
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- Update a yaml file given a script file
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- Update creates any missing entries in the path on the fly
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- Create a yaml file given a deep path and value
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- Create a yaml file given a script file
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- Prefix a path to a yaml file
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- Convert from json to yaml
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- Convert from yaml to json
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- Pipe data in by using '-'
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- Merge multiple yaml files where each additional file sets values for missing or null value keys.
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- Merge multiple yaml files and override previous values.
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- Merge multiple yaml files and append array values.
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- Supports multiple documents in a single yaml file
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## [Usage](http://mikefarah.github.io/yq/)
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Check out the [documentation](http://mikefarah.github.io/yq/) for more detailed and advanced usage.
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```
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yq is a lightweight and portable command-line YAML processor. It aims to be the jq or sed of yaml files.
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Usage:
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yq [flags]
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yq [command]
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Available Commands:
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delete yq d [--inplace/-i] [--doc/-d index] sample.yaml a.b.c
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help Help about any command
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merge yq m [--inplace/-i] [--doc/-d index] [--overwrite/-x] [--append/-a] sample.yaml sample2.yaml
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new yq n [--script/-s script_file] a.b.c newValue
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prefix yq p [--inplace/-i] [--doc/-d index] sample.yaml a.b.c
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read yq r [--doc/-d index] sample.yaml a.b.c
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write yq w [--inplace/-i] [--script/-s script_file] [--doc/-d index] sample.yaml a.b.c newValue
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Flags:
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-h, --help help for yq
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-t, --trim trim yaml output (default true)
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-v, --verbose verbose mode
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-V, --version Print version information and quit
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Use "yq [command] --help" for more information about a command.
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```
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## Contribute
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1. `scripts/devtools.sh`
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2. `make [local] vendor`
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3. add unit tests
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4. apply changes to go.mod
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5. `make [local] build`
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6. If required, update the user documentation
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- Update README.md and/or documentation under the mkdocs folder
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- `make [local] build-docs`
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- browse to docs/index.html and check your changes
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7. profit
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