yq/README.md

yaml

yaml is portable command line tool written in go

Allows you to read (and soon update) yaml files given a yaml path. All in a lovely dependency free binary!

Download latest release

or alternatively install using go get:

go get github.com/mikefarah/yaml

Read examples

yaml <yaml file> <path>

Basic

Given a sample.yaml file of:

b:
  c: 2

then

yaml sample.yaml b.c

will output the value of '2'.

Handling '.' in the yaml key

Given a sample.yaml file of:

b.x:
  c: 2

then

yaml sample.yaml \"b.x\".c

will output the value of '2'.

Arrays

You can give an index to access a specific element: e.g.: given a sample file of

b:
  e:
    - name: fred
      value: 3
    - name: sam
      value: 4

then

yaml sample.yaml b.e[1].name

will output 'sam'

Array Splat

e.g.: given a sample file of

b:
  e:
    - name: fred
      value: 3
    - name: sam
      value: 4

then

yaml sample.yaml b.e[*].name

will output:

- fred
- sam

Updating yaml

Given a sample.yaml file of:

b:
  c: 2

then

yaml w sample.yaml b.c cat

will output:

b:
  c: cat