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yq
v4.x
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Delete

Deletes matching entries in maps or arrays.

Delete entry in map

Given a sample.yml file of:
a: cat
b: dog
then
yq 'del(.b)' sample.yml
will output
a: cat

Delete nested entry in map

Given a sample.yml file of:
a:
a1: fred
a2: frood
then
yq 'del(.a.a1)' sample.yml
will output
a:
a2: frood

Delete entry in array

Given a sample.yml file of:
- 1
- 2
- 3
then
yq 'del(.[1])' sample.yml
will output
- 1
- 3

Delete nested entry in array

Given a sample.yml file of:
- a: cat
b: dog
then
yq 'del(.[0].a)' sample.yml
will output
- b: dog

Delete no matches

Given a sample.yml file of:
a: cat
b: dog
then
yq 'del(.c)' sample.yml
will output
a: cat
b: dog

Delete matching entries

Given a sample.yml file of:
a: cat
b: dog
c: bat
then
yq 'del( .[] | select(. == "*at") )' sample.yml
will output
b: dog

Recursively delete matching keys

Given a sample.yml file of:
a:
name: frog
b:
name: blog
age: 12
then
yq 'del(.. | select(has("name")).name)' sample.yml
will output
a:
b:
age: 12