CODEWITHSUNDEEP
amazon-web-servicesaws-lambdaaws-cli
red888
red888

Reputation: 31560

aws lambda list-functions filter out just function names?

I just want to get back a list of function names. Ideally I want to get all functions (just their name) starting with "some-prefix*". Can I do this with the cli?

Really want this as a cli command if possible (I want to avoid python or another sdk). I see there is a --cli-input-json arg, can I use that for filtering?

Upvotes: 27

Views: 31723

Answers (5)

user16454406
user16454406

Reputation: 9

Incase, someone is looking for a similar query with string present in the lambda function name as a substring, try below

aws lambda list-functions --region us-east-1 --query 'FunctionName[?contains(FunctionName, 'containing-string'] == 'true'].[FunctionName]' --output text

Note - the '[]' brackets around '.FunctionName' will provide with each fucntionName on a new line.

Upvotes: 0

Amit Kumar Kashyap
Amit Kumar Kashyap

Reputation: 49

You can easily get the list of all lambda functions in given region using below command:

aws lambda list-functions --region us-east-1 | jq -r .Functions[].FunctionName

Download the jq (Lightweight and flexible command-line JSON processor) from here: https://stedolan.github.io/jq/download/

Upvotes: 0

bp4D
bp4D

Reputation: 961

I have come here for some help to clean up all lambda functions that I have created while following an AWS developer certification tutorial. If anyone is in the same boat, I have created a script to programmatically delete all lambda functions in my AWS account (NOT for production use)

#!/bin/bash
# STOP: DON'T USE/RUN THIS SCRIPT UNLESS YOU ARE 100% SURE WHAT YOU ARE DOING 
#       I am a learner and created 20+ lambda functions while following a tutorial 
#       I wrote this script to programatically cleanup functions at the end of course    
# precondition: your aws cli is configured 
# get all functions from aws account
functions=(`aws lambda list-functions --query 'Functions[*].[FunctionName]' --output text`)
for i in "${functions[@]}"
do
   #delete functions 1-by-1 
   aws lambda delete-function --function-name "$i"   
   echo "deleted $i"
done

Upvotes: 1

Adiii
Adiii

Reputation: 59956

As the answer is already given by @krishna, but I was looking for a way to print all function name without specifying a prefix. So here you can get all lambda function name in particular region my default is us-west-2.

aws lambda list-functions  --query 'Functions[*].[FunctionName]'

Or as I want them out in text format and space separated to use in my bash script so here you can get in text and single line space separated.

aws lambda list-functions --query 'Functions[*].[FunctionName]' --output text | tr '\r\n' ' '

Upvotes: 3

krishna_mee2004
krishna_mee2004

Reputation: 7366

You can do that. Use the --query option. The CLI would look like this:

aws lambda list-functions --region us-east-1 --query 'Functions[].FunctionName' --output text

To get the list of functions whose name begin with some-prefix:

aws lambda list-functions --region us-east-1 --query 'Functions[?starts_with(FunctionName, `some-prefix`) == `true`].FunctionName' --output text

To get the complete JSON, the CLI would be:

aws lambda list-functions --region us-east-1

Details about the query parameter can be found here.

Upvotes: 59

Related Questions