hayderimran7

This is a snippet that will create a new user in jenkins and if security has been disabled , it will enable it :)

import jenkins.model.*
import hudson.security.*

def instance = Jenkins.getInstance()

def hudsonRealm = new HudsonPrivateSecurityRealm(false)
hudsonRealm.createAccount("MyUSERNAME","MyPASSWORD")
instance.setSecurityRealm(hudsonRealm)

hayderimran7

#!/bin/bash -xe
## Create a VPC Peering connection between EKS and RDS Postgres 
echo """ run this script as:
 ./eks-rds-peering.sh 
+ read -p 'Enter name of EKS Cluster: ' EKS_CLUSTER
Enter name of EKS Cluster: xolv-dev-cluster
+ EKS_VPC=eksctl-xolv-dev-cluster-cluster/VPC
+ EKS_PUBLIC_ROUTING_TABLE=eksctl-xolv-dev-cluster-cluster/PublicRouteTable
+ read -p 'Enter name of RDS: ' RDS_DB_NAME
Enter name of RDS: sfstackuat

hayderimran7

Intro

To use aws cli, its common to invoke built-in features like --filters and --query however they aren't avaiable for all the commands.

for my use case i wanted to get a role matching a name, i.e. regex pattern . that was very easy using jq

one-liner to get Role ARN of a role macthing name

if i want to get a role matching name eksctl-dev-cluster-addon-iamserviceaccount then to get ARN of that role is simply doing

hayderimran7

Running shell scripts that have contain sudo commands in them from jenkins might not run as expected. To fix this, follow along
Simple steps:
1. On ubuntu based systems, run " $ sudo visudo "
2. this will open /etc/sudoers file.
3. If your jenkins user is already in that file, then modify to look like this:

jenkins ALL=(ALL) NOPASSWD: ALL
4. save the file by doing Ctrl+O  (dont save in tmp file. save in /etc/sudoers, confirm overwrite)
5. Exit by doing Ctrl+X
6. Relaunch your jenkins job 

hayderimran7

#!/bin/bash

# IMPORTANT: Don't forget to logout from your Apple ID in the settings before running it!
# IMPORTANT: You will need to run this script from Recovery. In fact, macOS Catalina brings read-only filesystem which prevent this script from working from the main OS.
# This script needs to be run from the volume you wish to use.
# E.g. run it like this: cd /Volumes/Macintosh\ HD && sh /Volumes/Macintosh\ HD/Users/sabri/Desktop/disable.sh
# WARNING: It might disable things that you may not like. Please double check the services in the TODISABLE vars.

# Get active services: launchctl list | grep -v "\-\t0"
# Find a service: grep -lR [service] /System/Library/Launch* /Library/Launch* ~/Library/LaunchAgents

hayderimran7

python regex

chap1 : intro to regex

• regex: Regular expressions are text patterns that define the form a text string should have.
  • useful for email checking patern
  • matching word "color" and "colour"
  • extra specific info like postal code LOL: "Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems."

hayderimran7

AWK

Get users with uid > 1000

awk -F'[/:]' '{if ($3 >= 1000 && $3 != 65534) print $1}' /etc/passwd

Grep

Links:

• http://najomi.org/_nix/grep

hayderimran7

https://explainshell.com/

Find the largest file in a directory and its subdirectories using the find command & more

find . -printf '%s %p\n'| sort -nr | head -10

@see https://www.cyberciti.biz/faq/how-do-i-find-the-largest-filesdirectories-on-a-linuxunixbsd-filesystem/

Show host IP address for a specific domain

hayderimran7

get ocid

/(ocid.*([a-z 0-9]{60})+)/

get part after ocid

/[a-z 0-9]{60}\.(.*)/

hayderimran7

"geting all policies in given tenancy with no freeform tags

policies=$(oci --profile BOAT-OC1 iam policy list --all -c $C --query 'data[?length("freeform-tags")==`0`].name'| jq -r "@sh" )

find number of total policies in compartment

oci --profile BOAT-OC1 iam policy list --all -c $C --query 'data.length(@)'

get list of all compartments