How to modify yaml file value using bash scripting [duplicate]

Question

I need to update values on the .yml file

For example, On below I need to modify only the version

name: dummyaml
description: >-
  blah blah blah.

version: 1.2.3

environment:
  sdk: '>=2.10.0 <3.0.0'
  
dependencies:
  efts: ^2.0.4
  transmogrify: ^0.4.0
  
dev_dependencies:
  test: '>=1.15.0 <2.0.0'

I tried this

sed -i 's/^version:.*/version:'"$VERSION"'/' xy.yaml got below error

sed: 1: "xy.yaml": extra characters at the end of x command

Kindly do add your tried code as your efforts in your question, which is highly encouraged on SO, thank you. — RavinderSingh13
– RavinderSingh13, Commented Aug 3, 2022 at 19:55
while in your case you can do it with sed or awk, you should use yq for manipulating YAML from the shell — Fravadona
– Fravadona, Commented Aug 3, 2022 at 19:59

Nic3500 · Accepted Answer · 2022-08-03 20:04:07Z

4

sed 's/^\(version: \).*$/\15.6.7/' input.yml

sed 's/PATTERN/REPLACEMENT/': PATTERN matches something from the source. REPLACEMENT is what you now want to appear in the modified content.
\1: is the content of the text in parentheses in the PATTERN. Here, version:
^: starts with
$: ends with
5.6.7: some version I put there, put your own desired value

IMPORTANT: this will only work if you only have version: SOMETHING in the file. If you have more than one version: line, it will modify both!

answered Aug 3, 2022 at 20:04

Nic3500

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1 Comment

Shashikumar KL Over a year ago

Thanks sed 's/^$version: $.*$/\1'"$VERSION"'/' xy.yaml works for me

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