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@pwilken
pwilken / cleanup_s3_policy.py
Last active November 25, 2024 04:54
AWS Lambda function for deleting files from S3 bucket, filename contains timestamp. Clean up for everything older then 7 days. Triggered once a week by a CloudWatch Event.
import logging
import boto3
import datetime
from botocore.exceptions import ClientError
def lambda_handler(event, context):
# Set up logging
logging.basicConfig(level=logging.DEBUG,
format='%(levelname)s: %(asctime)s: %(message)s')
@crazygit
crazygit / get_autosaling_name.sh
Created April 14, 2017 06:54
get aws ec2 autoscaling group name
# get current ec2 AutoScaling group name
# note: change region option as yours
aws autoscaling describe-auto-scaling-instances --region us-east-1 --output text --query=AutoScalingInstances[].AutoScalingGroupName --instance-ids=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
@devStepsize
devStepsize / slack_slash_cmd.py
Created April 21, 2016 23:12
Server-side logic to handle a Slack slash command using Python and Flask
'''
This is an example of the server-side logic to handle slash commands in
Python with Flask.
Detailed documentation of Slack slash commands:
https://api.slack.com/slash-commands
Slash commands style guide:
https://medium.com/slack-developer-blog/slash-commands-style-guide-4e91272aa43a#.6zmti394c
'''
@iamralch
iamralch / ssh_client.go
Last active September 10, 2025 02:55
SSH client in GO
package main
import (
"fmt"
"io"
"io/ioutil"
"net"
"os"
"strings"

Using aws-cli and jq

list all instances for all ASGs

aws autoscaling describe-auto-scaling-instances \
  | jq '.AutoScalingInstances[] | {AutoScalingGroupName, InstanceId}'

list instance IDs for a particular ASG

@abrahamrhoffman
abrahamrhoffman / centos7ksiso.md
Last active March 11, 2022 22:39
CentOS 7 Kickstart File & How to build an (auto install) ISO

CentOS 7 Kickstart File - HOWTO Build ISO

There is so much documentation online from RedHat and CentOS about this topic - it's sad that I am writing this. But the real state of documentation on this topic (CentOS 7 + KS + ISO = Bootable DVD) is almost non-existent.

I found this: http://smorgasbork.com/component/content/article/35-linux/151-building-a-custom-centos-7-kickstart-disc-part-1

Which I greatly appreciate and +1, but the documentation is half-baked and there are numerous errors.

Finally... FINALLY! After four days of banging my head, I got this to work. Hopefully someone else will be able to do this in a few hours, instead of blowing their weekend like me. :(

@octocat
octocat / .gitignore
Created February 27, 2014 19:38
Some common .gitignore configurations
# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so
# Packages #
@hummus
hummus / gist:8592113
Last active September 26, 2024 01:29
aws cli + jq example
wget http://stedolan.github.io/jq/download/linux64/jq
aws ec2 describe-instances --filters "Name=tag:Name,Values=$NAME" \
"Name=instance-state-name,Values=running" \
| jq -r \
".Reservations[] | .Instances[] | .InstanceId" \
aws ec2 describe-volumes --filters \
"Name=status,Values=available" \
| jq -r ".Volumes[] | .VolumeId" \
@DamnedFacts
DamnedFacts / resolver.py
Last active November 17, 2022 02:36
Forward and Reverse DNS lookups with Python
import sys
"""
Resolve the DNS/IP address of a given domain
data returned is in the format:
(name, aliaslist, addresslist)
@filename resolveDNS.py
@version 1.01 (python ver 2.7.3)
@author LoanWolffe
"""