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til
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Today I Learned
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# TIL > Today I Learned My "Today I Learned" (TIL) snippets, inspired by [jbranchaud/til](https://github.com/jbranchaud/til). I'd also like to point out [simonw/til](https://github.com/simonw/til). --- ### Categories - [Ansible](#ansible) - [Authentication](#authentication) - [AWS](#aws) - [Bash](#bash) - [Chrome](#chrome) - [Docker](#docker) - [Dropwizard](#dropwizard) - [Electron](#electron) - [Git](#git) - [GitHub](#github) - [Helm](#helm) - [H2](#h2) - [HTML](#html) - [HTTP](#http) - [Java](#java) - [JavaScript](#javascript) - [Kubernetes](#k8s) - [Linux](#linux) - [Markdown](#markdown) - [Maven](#maven) - [Microsoft Teams](#microsoft-teams) - [Obsidian](#obsidian) - [PostgreSQL](#postgresql) - [Postman](#postman) - [PowerShell](#powershell) - [Raspberry Pi](#raspberry-pi) - [RDP](#rdp) - [React](#react) - [Rust](#rust) - [SSH](#ssh) - [Terraform](#terraform) - [Terragrunt](#terragrunt) - [Ubuntu](#ubuntu) - [VIM](#vim) - [VMware](#vmware) - [VSCode](#vscode) - [Wget](#wget) - [Windows](#windows) - [WSL](#wsl) --- ### Ansible - [Ansible configuration directory should not be world writable](ansible/ansible-cfg.md) ### Authentication - [JSON Web Token (JWT) debugger](authentication/jwt-io.md) ### AWS - [List MFA Devices](aws/list-mfa.md) - [List CIDR Blocks in Use](aws/list-cidr.md) - [List EC2 Instances Filtered by AMI](aws/ec2-by-ami.md) - [List RDS Cluster Snapshots](aws/list-snapshots.md) - [Exit Assumed IAM Role](aws/exit-assumed.md) ### Bash - [Get Multiple Values from a Bash Function](bash/multiple-return-values.md) - [Move Multiple Files](bash/move-multiple-files.md) - [Expand Parameters](bash/expand-variables.md) ### Chrome - [Chrome Proxy](chrome/proxy.md) - [How to Obtain a HAR Capture](chrome/har-capture.md) ### Docker - [Compose, Build, and Tag](docker/compose-build.md) - [Docker container statistics](docker/stats.md) - [The difference between CMD and ENTRYPOINT](docker/cmd-entrypoint.md) - [Docker Compose Restart Policy](docker/docker-compose-restart.md) - [Docker Health Check](docker/health-check.md) - [Format Docker Inspect with jq](docker/format-jq.md) - [Override the Entry Point](docker/entrypoint.md) - [Volume Mounts on Windows](docker/windows-volume.md) - [Docker Import](docker/import.md) - [Extract File from Docker Image](docker/extract-file.md) ### Dropwizard - [Set the root path](dropwizard/root-path.md) - [Shutdown options for Dropwizard](dropwizard/shutdown.md) - [Database transactions in non-Jersey resources](dropwizard/unitofwork-proxy.md) - [Environment variables](dropwizard/env-var.md) - [Add Swagger Documentation to Dropwizard](dropwizard/swagger.md) - [Change Log Level Using Admin Task](dropwizard/log-level.md) - [Run a Background Process in Dropwizard](dropwizard/background-process.md) - [Update Deprecated API Reference](dropwizard/deprecated-hibernate.md) ### Electron - [Exclude Files from an Electron Project](electron/exclude-files.md) ### Git - [Recover Deleted Branch](git/recover-deleted.md) - [Bypass Git Hooks](git/skip-hooks.md) - [Use Credential Manager Under WSL](git/cred-wsl.md) - [Merge Individual Files](git/merge-single-file.md) - [Checkout a Tag](git/checkout-tag.md) - [Remove a Tag](git/remove-tag.md) - [Modify Commit Message](git/modify-msg.md) - [Rename a Tag](git/rename-tag.md) - [Change Commit for Tag](git/change-tag.md) - [Revert a Revert](git/revert-revert.md) - [Find Commit by Git Hash](git/commit-hays.md) - [Get the Commit Hash](git/retrieve-hash.md) - [Locate Branches the Commit is On](git/commit-branch.md) - [Signing Commits](git/commit-sig.md) - [Remove Unused Branches](git/remove-unused-branches.md) - [Remove from Git but Keep Local File](git/local-not-git.md) ### GitHub - [Create Empty Folder with Online Editor](github/empty-dir.md) - [GitHub CLI](github/gh-cli.md) - [Add an Image to a Wiki](github/wiki-img.md) - [Filter API Results with JQ](github/api-jq.md) - [GitHub Statistics in Your README](github-stats.md) ### Golang - [Repeat a String in Go](golang/repeat-string.md) - [Reduce the Size of a Go Binary](golang/reduce-size.md) ### Helm - [Side Effect of the Ingress Host Entry](helm/host-entry.md) ### H2 - [Import Data to H2 From PostgreSQL](h2/import-postgres.md) ### HTML - [Open a New Tab or Window from Form](new-tab.md) - [Disable Autocomplete](disable-autocomplete.md) - [Remove Indent from Lists](remove-indent.md) - [HTML 5 Details Tag](html/html5-details.md) ### HTTP - [A simple HTTP Request & Response Service](http/httpbin.md) ### Java - [Execute a Java Class with JShell](java/jshell-run-class.md) - [Use Jackson to deserialize an array of objects](java/jackson-deserialize-array.md) - [Ignore null values with Jackson](java/jackson-ignore-null.md) - [Add Classpath to Shaded JAR](java/shaded-classpath.md) - [Import External Library in JShell](java/jshell-import-jar.md) - [Hide Password in Command Line Argument using Argparse4j](java/noshow-pass.md) - [Convert Hex to Base64](java/hex-to-base64.md) - [Get URI information](java/uri-info.md) - [Shebang! Run Single File Java as Script](java/java-shebang.md) - [Display Contents of JAR Manifest](java/jar-manifest.md) - [Check Certificates in a Keystore](java/keystore-certs.md) - [Update Manifest inside JAR](java/update-manifest.md) - [Java Console Application Spinner](java/console-spinner.md) - [Java Simple Web Server](java/java-simple-webserver.md) ### JavaScript - [Reload a Page](javascript/reload-page.md) - [Set JavaScript Console Log Level](javascript/console-log-level.md) - [JavaScript Hoisting](javascript/why-let.md) ### Kubernetes - [Switch Context](k8s/context.md) - [Copy Files from a Pod](k8s/kubectl-cp.md) - [Obtain Previous Container's Crash Log](k8s/crash-log.md) - [List Recently Deleted Pods](k8s/deleted-pods.md) ### Linux - [Type List Backwards](linux/list-backwards.md) - [Get Version and Details of Package Using Zypper](linux/zypper-details.md) - [TCP Command-Line Tool](linux/tcpserver.md) ### Markdown - [List in Markdown Table Cell](markdown/list-in-table.md) - [Internal, Relative Links](markdown/internal-links.md) - [Note and Warning Emphasis](markdown/note-warning.md) - [Comments in Markdown](markdown/comments.md) ### Maven - [Maven Parallel Build](maven/parallel-build.md) - [Special Characters in Maven Settings](maven/settings-special-char.md) - [Set Execute Permission in Maven](maven/set-execute-permission.md) ### Microsoft Teams - [Navigate from the keyboard](msteams/navigate.md) - [Export Wiki as PDF Document](msteams/export-wiki.md) ### Obsidian - [Callouts](obsidian/callouts.md) - [Change Location of Images](obsidian/image-location.md) - [How to Embed YouTube Videos](obsidian/youtube-videos.md) ### PostgreSQL - [Export tables to CSV](postgres/export-csv.md) - [Change password](postgres/change-password.md) - [Dump a Database from a Docker Container](postgres/dump-container.md) - [PostgreSQL Is Ready Utility](postgres/pg-isready.md) - [Analyze a PostgreSQL Database from the Command Line](postgres/analyze-db.md) ### Postman - [Load payload from file](postman/file-payload.md) - [Show Request Headers](postman/request-headers.md) ### PowerShell - [Get Windows Capability](powershell/get-capability.md) - [Scoop](powershell/scoop.md) - [Equivalent of Which in PowerShell](powershell/which.md) - [How to Dot Source in PowerShell](powershell/source.md) - [Generate a GUID](powershell/guid.md) ### Python - [UV Python Package and Project Manager](python/uv.md) ### Raspberry Pi - [Play Sound from Unattended Session](pi/headless-sound.md) ### RDP - [Multiple Monitors with Remote Desktop Session](rdp/multi-monitor.md) ### React - [How to Use Comments in React](react/comments.md) ### Rust - [Isolating a Rust Application in a Docker Container](rust/rust-in-docker.md) ### SSH - [sshpass](ssh/sshpass.md) - [ssh-copy-id](ssh/ssh-copy-id) - [Show SSH Key Hashes](ssh/ssh-hash.md) - [Remove Passphrase from SSH Key](ssh/remove-passphrase.md) ### Terraform - [Create a graph of Terraform resources](terraform/tform-graph.md) ### Terragrunt - [Fix empty tuple error](terragrunt/fix-empty-tuple.md) ### Ubuntu - [Recover root password on Ubuntu 18.04](ubuntu/recover-passwd.md) - [Disable ipv6 in Ubuntu](ubuntu/disable-ipv6.md) - [Troubleshoot reverse lookups on Ubuntu 18.04](ubuntu/dhcp-reverse.md) - [Set Default Java Version](ubuntu/default-java.md) ### Vim - [Alternative to Escape Key](vim/esc-alt.md) ### VMware - [Force BIOS Setup](vmware/force-bios.md) ## VSCode - [Change VSCode Terminal Font](vscode/terminal-font.md) - [Attach a Source JAR](vscode/source-jar.md) - [Search and Replace Tabs in VSCode](vscode/replace-tabs.md) ### Wget - [Output JSON Response to Stdout](wget/get-stdout.md) ### Windows - [Retrieve Windows product key](windows/productkey.md) - [Look up RGB codes with Microsoft Paint](windows/paint-dropper-tool.md) - [Command Line Interface to Windows Credential Manager](windows/cred-cli.md) - [Decode Base64 on the Command Line](windows/base64-decode.md) - [Set up Powerline in Windows Terminal](windows/powerline-winterm.md) - [Add Cmder to Windows Terminal](windows/cmder-winterm.md) - [Applications Virtual Folder Shortcut](windows/apps-shortcut.md) - [Using Windows 10 Snip & Sketch](windows/snip-sketch.md) - [Add Git Bash to Windows Terminal](windows/gitbash-winterm.md) ### WSL - [Map WSL Disk as Network Drive](wsl/map-wsl-disk.md) - [Browse WSL Files from Windows Explorer](wsl/browse-explorer.md) - [Set Terminal Starting Directory to WSL Home](wsl/wsl-starting-dir.md) - [Limit WSL 2 Memory](wsl/limit-memory.md) ## Acknowledgements I "borrowed" this idea from [jbranchaud/til](https://github.com/jbranchaud/til). ## License © 2020 Garve Hays This repository is licensed under the MIT license. See `LICENSE` for details.
