y
y
yq
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y
y
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
Comment Operators
Contains
Create, Collect into Object
Delete
Document Index
Encode / Decode
Entries
Env Variable Operators
Equals
File Operators
Flatten
Group By
Has
Keys
Length
Load
Map
Multiply (Merge)
Parent
Path
Pipe
Recursive Descent (Glob)
Reduce
Select
Sort
Sort Keys
Split into Documents
String Operators
Style
Subtract
Tag
Traverse (Read)
Union
Unique
Variable Operators
With
Usage
Output format
Working with Properties
Working with CSV, TSV
Working with JSON
Working with XML
Front Matter
Split into multiple files
GitHub Action
Tips, Tricks, Troubleshooting
Github Page
Powered By
GitBook
Equals
This is a boolean operator that will return
true
if the LHS is equal to the RHS and
false
otherwise.
1
.a == .b
Copied!
It is most often used with the select operator to find particular nodes:
1
select(.a == .b)
Copied!
Match string
Given a sample.yml file of:
1
-
cat
2
-
goat
3
-
dog
Copied!
then
1
yq
eval
'.[] | (. == "*at")'
sample.yml
Copied!
will output
1
true
2
true
3
false
Copied!
Don't match string
Given a sample.yml file of:
1
-
cat
2
-
goat
3
-
dog
Copied!
then
1
yq
eval
'.[] | (. != "*at")'
sample.yml
Copied!
will output
1
false
2
false
3
true
Copied!
Match number
Given a sample.yml file of:
1
-
3
2
-
4
3
-
5
Copied!
then
1
yq
eval
'.[] | (. == 4)'
sample.yml
Copied!
will output
1
false
2
true
3
false
Copied!
Dont match number
Given a sample.yml file of:
1
-
3
2
-
4
3
-
5
Copied!
then
1
yq
eval
'.[] | (. != 4)'
sample.yml
Copied!
will output
1
true
2
false
3
true
Copied!
Match nulls
Running
1
yq
eval
--null-input
'null == ~'
Copied!
will output
1
true
Copied!
Non exisitant key doesn't equal a value
Given a sample.yml file of:
1
a
:
frog
Copied!
then
1
yq
eval
'select(.b != "thing")'
sample.yml
Copied!
will output
1
a
:
frog
Copied!
Two non existent keys are equal
Given a sample.yml file of:
1
a
:
frog
Copied!
then
1
yq
eval
'select(.b == .c)'
sample.yml
Copied!
will output
1
a
:
frog
Copied!
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Env Variable Operators
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File Operators
Last modified
1mo ago
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Contents
Match string
Don't match string
Match number
Dont match number
Match nulls
Non exisitant key doesn't equal a value
Two non existent keys are equal