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How to measure response time using curl?

Command:

curl -kv -w '\n* Response time: %{time_total}s\n' <IP_OR_URL>

Example:

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How to find Kubernetes Role or ClusterRole linked to a specific ServiceAccount?

kubectl get rolebinding,clusterrolebinding --all-namespaces -o jsonpath='{range .items[?(@.subjects[0].name=="SERVICE_ACCOUNT_NAME")]}[{.roleRef.kind},{.roleRef.name}]{end}'

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How to show all docker build logs?

docker build -t YOUR-USER-NAME/YOUR-REPO:<YOUR-IMAGE-TAG> --no-cache --progress=plain .

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Format

https://www.google.com/s2/favicons?domain=example.com

Example

https://www.google.com/s2/favicons?domain=github.com

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How to view the content of *.yaml.gz file stored in Kubernetes secret?

$ kubectl -n <NAMESPACE> get secret <SECRET> -o json | jq -r '.data."prometheus.yaml.gz"' | base64 -d | gunzip

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• How to install x11vnc vnc server as a service on Ubuntu 20.04, for remote access or screen sharing
• Headless X11

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How do I see how much free ram I really have?

$ free | grep Mem | awk '{print $3/$2 * 100.0}'

Source: https://www.linuxatemyram.com

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# List all apps
heroku apps

# Delete all apps created by yourself
for app in $(heroku apps --json | jq -r '.[] | select(.owner.email == "<insert-heroku-email-here>") | .name'); do echo $app | heroku apps:destroy $app; done

# Leave all apps created by others where you were a collaborator
for app in $(heroku apps --json | jq -r '.[] | select(.owner.email != "<insert-heroku-email-here>") | .name'); do heroku apps:leave -a $app; done

# List all apps again

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apiVersion: v1
kind: Namespace
metadata:
  name: dummy-exporter
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: dummy-exporter

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Problem

How to list all root keys in YAML file using yq v4 CLI?

Solution

yq4 is my terminal alias for yq above

Let's print all the root keys if they have enabled sub-key e.g.