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yq
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yq
v4.x
yq
How It Works
Upgrading from V3
Commands
Evaluate
Evaluate All
Shell Completion
Operators
Add
Alternative (Default value)
Anchor and Alias Operators
Assign (Update)
Boolean Operators
Collect into Array
Column
Comment Operators
Compare Operators
Contains
Create, Collect into Object
Date Time
Delete
Document Index
Encode / Decode
Entries
Env Variable Operators
Equals
Eval
File Operators
Flatten
Group By
Has
Keys
Length
Line
Load
Map
Multiply (Merge)
Parent
Path
Pick
Pipe
Recursive Descent (Glob)
Reduce
Reverse
Select
Sort
Sort Keys
Split into Documents
String Operators
Style
Subtract
Tag
Traverse (Read)
Union
Unique
Variable Operators
With
Usage
Output format
Working with CSV, TSV
Working with JSON
Working with Properties
Working with XML
Front Matter
Split into multiple files
GitHub Action
Tips, Tricks, Troubleshooting
Github Page
Powered By
GitBook
Collect into Array
This creates an array using the expression between the square brackets.
Note that versions prior to 4.18 require the 'eval/e' command to be specified.
yq e <exp> <file>
Collect empty
Running
1
yq --null-input
'[]'
Copied!
will output
1
[]
Copied!
Collect single
Running
1
yq --null-input
'["cat"]'
Copied!
will output
1
-
cat
Copied!
Collect many
Given a sample.yml file of:
1
a
:
cat
2
b
:
dog
Copied!
then
1
yq
'[.a, .b]'
sample.yml
Copied!
will output
1
-
cat
2
-
dog
Copied!
Previous
Boolean Operators
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Column
Last modified
4mo ago
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Contents
Collect empty
Collect single
Collect many