xbalaji

# split a file (sp500.csv) with 101 lines each with numeric suffixes and additional extension suffixes
split --numeric-suffixes=1 -l 101 sp500.csv stock --additional-suffix=".csv"; ls stock*.csv

# the output is as below
stock01.csv  stock02.csv  stock03.csv  stock04.csv  stock05.csv

# gnome graphical font size
#   fontsize 1.5 <-- to make it bigger
#   fontsize     <-- to reset to normal
#   fontsize 0.7 <-- to make it smaller

xbalaji

#!/bin/bash

# cleanup containers.json (remove tmp containers, sort them by name)
# open command prompt in profiles directory and execute

# only have the non-tmp containers
jq '.' containers.json > c01.json
jq '.identities |= map(select(.name | test("^tmp") | not)) | .identities |= sort_by(.name) | .' c01.json > containers.json

# Construct the grep pattern with 'userContextId=' for each userContextId from JSON for just the tmp containers

xbalaji

# source this file and use the functions, download the jenkins-cli.jar first
export JENKINS_SERVER=localhost
export JENKINS_PORT=8080
export JENKINS_USER='admin'
export JENKINS_PASS='admin'
export JENKINS_PROTO='http'
export JENKINS_JOBDIR="jenkins-jobs"

jenkins_urlhelp() {
  echo "copy, change and paste for customization"

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execute the scripts http://jenkins-server/script

For simple jobs

def jobName = "xb-nodetest"
def job = Jenkins.instance.getItem(jobName)
job.getBuilds().each { it.delete() }
job.nextBuildNumber = 1
job.updateNextBuildNumber(1)
job.save()

xbalaji

# generate string list
python3 -c 'import random,json,string; print([ "".join([random.choice(string.ascii_letters) for ix in range(15)]) for jx in range(10)])'

# print one each line, logic is to create a list first and use print with * and separator
python3 -c 'import random,string; sx = ["".join([random.choice(string.ascii_letters) for ix in range(15)]) for jx in range(10)]; print(*sx, sep="\n")'

# generate a csv file, the one below generates a csv file with random people name and age, change the tuple to more than 2, you could create address
python3 -c 'import random,string; ppl = [("".join(random.choice(string.ascii_letters) for ix in range(6)), random.randrange(20,90)) for jx in range(10)]; [print(f"{name}, {age}") for name, age in ppl]'

# generate AWS account numbers, random 12 digit number, primarily used for testing

xbalaji

# create a volume, attach it, erase the disk, save the install app to it
hdiutil create -o macos/Catalina -size 10g  -volname Catalina -layout SPUD -fs HFS+J
hdiutil attach macos/Catalina.dmg -noverify -mountpoint /Volumes/Catalina
DISKNUM=$(df -h /Volumes/Catalina | tail -1 | cut -c6-10)
diskutil eraseDisk JHFS+ Catalina ${DISKNUM}

# now install the macos on to the mounted volume
"/Applications/Install macOS Catalina.app/Contents/Resources/createinstallmedia" --volume /Volumes/Catalina/ --nointeraction

# convert to img

xbalaji

#list all accounts
aws organizations list-accounts

#list all active accounts
aws organizations list-accounts | jq -r '.Accounts[] | select(.Status == "ACTIVE") | "\(.Id) \(.Name)"'

# create a key value pair of account number to name
aws organizations list-accounts | jq -M '[.Accounts[] | select(.Status == "ACTIVE") | {(.Id): .Name}] | add | to_entries | sort_by(.key) | from_entries'

#list all in-active accounts

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cat "xml-file" | python3 -c 'import sys,xmltodict,yaml,json; print(yaml.dump(json.loads(json.dumps(xmltodict.parse(sys.stdin.read())))))'
aws ec2 describe-vpn-connections | jq -r '.VpnConnections[].CustomerGatewayConfiguration' | python3 -c 'import sys,xmltodict,yaml,json; print(yaml.dump(json.loads(json.dumps(xmltodict.parse(sys.stdin.read())))))'

xbalaji

aws configservice --region us-west-1 describe-delivery-channels
aws configservice --region us-west-2 describe-delivery-channels
aws configservice --region us-east-1 describe-delivery-channels
aws configservice --region us-east-2 describe-delivery-channels

aws configservice --region us-west-1 delete-delivery-channel --delivery-channel-name default
aws configservice --region us-west-2 delete-delivery-channel --delivery-channel-name default
aws configservice --region us-east-1 delete-delivery-channel --delivery-channel-name default
aws configservice --region us-east-2 delete-delivery-channel --delivery-channel-name default

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aws ec2 describe-instances | jq -c '.Reservations[].Instances[] | { InstanceId: .InstanceId, IP:.PrivateIpAddress, State: .State.Name} '

aws ec2 describe-instances | jq -c '.Reservations[].Instances[] | [ .InstanceId, .PrivateIpAddress, .State.Name] '

aws ec2 describe-instances --query 'Reservations[*].Instances[*].[InstanceId]' --filters Name=instance-state-name,Values=running --output text

aws ec2 describe-instances --query 'Reservations[*].Instances[*].[InstanceId,PrivateIpAddress,State.Name]' --filters Name=instance-state-name,Values=running --output text

aws ec2 describe-instances --filters Name=instance-state-name,Values=running --query 'Reservations[*].Instances[*].[InstanceId,PrivateIpAddress]' --output text