yq/mkdocs/delete.md
2019-05-16 14:56:00 +10:00

198 lines
2.2 KiB
Markdown

```
yq d <yaml_file> <path_to_delete>
```
### To Stdout
Given a sample.yaml file of:
```yaml
b:
c: 2
apples: green
```
then
```bash
yq d sample.yaml b.c
```
will output:
```yaml
b:
apples: green
```
### From STDIN
```bash
cat sample.yaml | yq d - b.c
```
### Deleting array elements
Given a sample.yaml file of:
```yaml
b:
c:
- 1
- 2
- 3
```
then
```bash
yq d sample.yaml 'b.c[1]'
```
will output:
```yaml
b:
c:
- 1
- 3
```
### Deleting nodes in-place
Given a sample.yaml file of:
```yaml
b:
c: 2
apples: green
```
then
```bash
yq d -i sample.yaml b.c
```
will update the sample.yaml file so that the 'c' node is deleted
### Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
dogs: woof
item2:
cats: apples
dogs: woof2
thing:
cats: oranges
dogs: woof3
```
then
```bash
yq d sample.yaml bob.*.cats
```
will output:
```yaml
---
bob:
item1:
dogs: woof
item2:
dogs: woof2
thing:
dogs: woof3
```
### Prefix Splat
Given a sample.yaml file of:
```yaml
---
bob:
item1:
cats: bananas
dogs: woof
item2:
cats: apples
dogs: woof2
thing:
cats: oranges
dogs: woof3
```
then
```bash
yq d sample.yaml bob.item*.cats
```
will output:
```yaml
---
bob:
item1:
dogs: woof
item2:
dogs: woof2
thing:
cats: oranges
dogs: woof3
```
### Array Splat
Given a sample.yaml file of:
```yaml
---
bob:
- cats: bananas
dogs: woof
- cats: apples
dogs: woof2
- cats: oranges
dogs: woof3
```
then
```bash
yq d sample.yaml bob.[*].cats
```
will output:
```yaml
---
bob:
- dogs: woof
- dogs: woof2
- dogs: woof3
```
### Multiple Documents - delete from single document
Given a sample.yaml file of:
```yaml
something: else
field: leaveMe
---
b:
c: 2
field: deleteMe
```
then
```bash
yq w -d1 sample.yaml field
```
will output:
```yaml
something: else
field: leaveMe
---
b:
c: 2
```
### Multiple Documents - delete from all documents
Given a sample.yaml file of:
```yaml
something: else
field: deleteMe
---
b:
c: 2
field: deleteMeToo
```
then
```bash
yq w -d'*' sample.yaml field
```
will output:
```yaml
something: else
---
b:
c: 2
```
Note that '*' is in quotes to avoid being interpreted by your shell.
{!snippets/niche.md!}