https://github.com/curiouslearner/til

Collection of my daily learning
https://github.com/curiouslearner/til
Last synced: 2 months ago
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Collection of my daily learning
Host: GitHub
URL: https://github.com/curiouslearner/til
Owner: CuriousLearner
Created: 2023-02-09T20:52:28.000Z (over 3 years ago)
Default Branch: main
Last Pushed: 2024-04-03T03:23:45.000Z (about 2 years ago)
Last Synced: 2024-04-13T21:57:48.230Z (about 2 years ago)
Language: Python
Size: 54.7 KB
Stars: 2
Watchers: 3
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
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README

          # TIL (Today I Learned)

"Byte-sized" 😏 snippets of things I learned 🤔

**97** TILs 🤓 so far.

## AWS

* [IGW vs. NAT – Understanding Private to Public IP Mapping](https://github.com/CuriousLearner/til/blob/main/aws/igw-vs-nat-gateway.md) - 2025-02-28

* [AWS reserves five IPs per subnet](https://github.com/CuriousLearner/til/blob/main/aws/reserving-five-ips-per-subnet.md) - 2023-02-12

* [No self-signed certificates in Cloudfront's SSL connection](https://github.com/CuriousLearner/til/blob/main/aws/no-self-signed-certificate-cloudfront.md) - 2023-02-12

* [ACM certificate should always be in us-east-1 for Cloudfront](https://github.com/CuriousLearner/til/blob/main/aws/acm-cloudfront.md) - 2023-02-12

## Bash

* [Bash trap with ERR and EXIT for Error Handling](https://github.com/CuriousLearner/til/blob/main/bash/trap-err-exit-status.md) - 2025-09-18

## CLI

* [Creating user accounts with expiration dates](https://github.com/CuriousLearner/til/blob/main/cli/useradd-with-expiration.md) - 2026-01-25

* [Using `getent passwd` to query user accounts](https://github.com/CuriousLearner/til/blob/main/cli/getent-passwd.md) - 2026-01-25

* [Using pkill with -f flag for full command line matching](https://github.com/CuriousLearner/til/blob/main/cli/pkill-with-full-pattern-matching.md) - 2025-09-22

* [`apt-get distclean` for complete package cleanup](https://github.com/CuriousLearner/til/blob/main/cli/apt-get-distclean.md) - 2025-09-12

* [Netcat (`nc`) and Raw TCP Communication](https://github.com/CuriousLearner/til/blob/main/cli/netcat-and-raw-tcp-connection.md) - 2025-03-01

* [Unzip overwrite and place content in a directory](https://github.com/CuriousLearner/til/blob/main/cli/unzip-overwrite-specify-directory.md) - 2025-02-10

* [`envsubst` command for substituting values in config files](https://github.com/CuriousLearner/til/blob/main/cli/envsubst-command-for-config-files.md) - 2024-07-28

* [Pass Arguments From Previous Command](https://github.com/CuriousLearner/til/blob/main/cli/pass-arguments-from-previous-command.md) - 2023-07-19

* [Execute last command with sudo](https://github.com/CuriousLearner/til/blob/main/cli/execute-previous-command-with-sudo.md) - 2023-02-13

## CSS

* [Select by attr in list of values](https://github.com/CuriousLearner/til/blob/main/css/select-by-attr-in-list-of-values.md) - 2024-04-22

## Django

* [Dynamic related_name in Abstract Models](https://github.com/CuriousLearner/til/blob/main/django/dynamic-related-name-abstract-models.md) - 2026-01-07

* [Override Migration Locations with MIGRATION_MODULES in Django](https://github.com/CuriousLearner/til/blob/main/django/migration-modules-setting.md) - 2025-10-08

* [Using EXPLAIN and EXPLAIN ANALYZE for Django QuerySets](https://github.com/CuriousLearner/til/blob/main/django/queryset-explain-analyze.md) - 2025-10-03

* [Random ordering with order_by("?") in Django](https://github.com/CuriousLearner/til/blob/main/django/order-by-random.md) - 2025-10-02

* [Using `_refresh_after_create` in model_bakery](https://github.com/CuriousLearner/til/blob/main/django/model-bakery-refresh-after-create.md) - 2025-09-23

* [Understanding Django ForeignKey Fields](https://github.com/CuriousLearner/til/blob/main/django/foreign-key-attrs.md) - 2025-05-16

* [Managing Schema-less Migrations in Django with `SeparateDatabaseAndState`](https://github.com/CuriousLearner/til/blob/main/django/separate-db-and-state-migration.md) - 2025-05-16

* [Speed Up Django Admin with `list_select_related`](https://github.com/CuriousLearner/til/blob/main/django/admin-list-select-related.md) - 2025-05-16

* [Isolate Redis cache for parallel tests](https://github.com/CuriousLearner/til/blob/main/django/isolate-redis-cache-for-parallel-tests.md) - 2025-02-20

* [Fixing Coverage for Django's `manage.py test --parallel`](https://github.com/CuriousLearner/til/blob/main/django/coverage-on-parallel-tests.md) - 2025-02-20

* [Using `add_q` in Django Queries](https://github.com/CuriousLearner/til/blob/main/django/add-q-in-django-queryset.md) - 2024-06-23

* [Add Multiple Objects In Queryset In Many To Many Relationship](https://github.com/CuriousLearner/til/blob/main/django/set-whole-queryset-in-m2m-relationship.md) - 2024-06-23

* [Generate random secret key](https://github.com/CuriousLearner/til/blob/main/django/generate-random-secrety-key.md) - 2024-06-03

* [Empty database](https://github.com/CuriousLearner/til/blob/main/django/empty-database.md) - 2023-07-08

* [Use `defer()` to limit fields fetched from models](https://github.com/CuriousLearner/til/blob/main/django/defer-fields-for-performance.md) - 2023-02-12

* [Redundant all chaining in queryset](https://github.com/CuriousLearner/til/blob/main/django/redundant-all-in-queryset.md) - 2023-02-12

## Django Extensions

* [Print SQL on ORM queries](https://github.com/CuriousLearner/til/blob/main/django-extensions/print-sql-on-orm-queries.md) - 2025-02-28

## Docker

* [Filter list of docker containers](https://github.com/CuriousLearner/til/blob/main/docker/filter-list-of-containers.md) - 2025-02-28

* [Target in Docker Compose File](https://github.com/CuriousLearner/til/blob/main/docker/target-in-docker-compose.md) - 2024-07-28

* [Get rid of persistent volumes in `docker compose down`](https://github.com/CuriousLearner/til/blob/main/docker/get-rid-of-persistent-volume-docker-compose.md) - 2024-06-23

## Git

* [Show file contents from a specific branch](https://github.com/CuriousLearner/til/blob/main/git/show-file-from-branch.md) - 2025-12-13

* [Remove Files from Git History](https://github.com/CuriousLearner/til/blob/main/git/remove-files-from-git-history.md) - 2025-12-08

* [Git Garbage Collection](https://github.com/CuriousLearner/til/blob/main/git/git-garbage-collection.md) - 2025-12-08

* [Rewrite Git Commit Metadata](https://github.com/CuriousLearner/til/blob/main/git/rewrite-git-commit-metadata.md) - 2025-12-08

* [Stash Selective Changes in Git](https://github.com/CuriousLearner/til/blob/main/git/stash-selective-changes.md) - 2025-02-20

* [Finding Git Commits That Touched a Specific File or String](https://github.com/CuriousLearner/til/blob/main/git/finding-commits-changing-a-file.md) - 2025-02-20

* [Revert file(s) state to one in diff branch](https://github.com/CuriousLearner/til/blob/main/git/revert-files-to-state-in-diff-branch.md) - 2024-07-28

* [`git rev-parse` for parsing Git revision information](https://github.com/CuriousLearner/til/blob/main/git/rev-parse-for-revision-information.md) - 2024-04-18

* [`git diff --name-only` for file names only](https://github.com/CuriousLearner/til/blob/main/git/diff-name-only.md) - 2024-04-18

* [`git merge-base` for common-ancestor commit](https://github.com/CuriousLearner/til/blob/main/git/merge-base-for-common-ancestor-commit.md) - 2024-04-18

* [Ignore commits in git-blame view](https://github.com/CuriousLearner/til/blob/main/git/ignore-commits-in-git-blame.md) - 2023-02-13

## Github

* [Add Funding Information to GitHub Projects](https://github.com/CuriousLearner/til/blob/main/github/add-funding-info.md) - 2025-10-21

* [See git-blame for a file](https://github.com/CuriousLearner/til/blob/main/github/show-git-blame-for-a-file.md) - 2023-02-13

## Github Actions

* [Understanding Permissions in GitHub Actions](https://github.com/CuriousLearner/til/blob/main/github-actions/permissions.md) - 2024-10-10

* [`paths` and `paths-ignore` filter for optimized Workflow run](https://github.com/CuriousLearner/til/blob/main/github-actions/path-filter.md) - 2024-10-10

* [Enable automatic inline annotations in PR using Ruff](https://github.com/CuriousLearner/til/blob/main/github-actions/ruff-github-comments.md) - 2023-02-13

* [Permissions for pushing to a repository](https://github.com/CuriousLearner/til/blob/main/github-actions/push-to-repo.md) - 2023-02-12

## Go

* [Using `go doc` to Read Package Documentation](https://github.com/CuriousLearner/til/blob/main/go/go-doc-command.md) - 2025-11-26

* [Import package without using it via underscore (`_`)](https://github.com/CuriousLearner/til/blob/main/go/import-unused-package.md) - 2024-06-23

* [Build tags in Golang](https://github.com/CuriousLearner/til/blob/main/go/build-tags.md) - 2024-06-23

## Html

* [Server-Sent Events (SSE)](https://github.com/CuriousLearner/til/blob/main/html/server-sent-events.md) - 2026-02-26

* [Subresource Integrity (SRI) Hashes](https://github.com/CuriousLearner/til/blob/main/html/sri-hashes.md) - 2026-01-07

## Make

* [Control `make` Behavior with `MAKEFLAGS`](https://github.com/CuriousLearner/til/blob/main/make/default-options-as-makeflags.md) - 2025-02-20

* [Improve `make` Output Readability with `--output-sync` for Parallel Jobs](https://github.com/CuriousLearner/til/blob/main/make/sync-output-for-parallel-jobs.md) - 2025-02-20

* [Speed Up Builds with `make -j` and Auto-Detect CPU Cores](https://github.com/CuriousLearner/til/blob/main/make/parallel-jobs.md) - 2025-02-20

## Markdown

* [Markdown Alerts](https://github.com/CuriousLearner/til/blob/main/markdown/markdown-alerts.md) - 2024-07-28

## Mastodon

* [Sending direct message on Mastodon](https://github.com/CuriousLearner/til/blob/main/mastodon/send-direct-message.md) - 2023-02-14

## NPM

* [`npm ci` (clean install) for CI pipelines](https://github.com/CuriousLearner/til/blob/main/npm/clean-install-for-ci-pipelines.md) - 2025-02-28

## PDF

* [Reduce file size of PDF files](https://github.com/CuriousLearner/til/blob/main/pdf/compress-pdf.md) - 2023-03-15

* [Remove PDF Password](https://github.com/CuriousLearner/til/blob/main/pdf/remove-pdf-password.md) - 2023-03-15

## Poetry

* [Editable installation for a package](https://github.com/CuriousLearner/til/blob/main/poetry/editable-installation-for-package.md) - 2025-02-28

* [Generate requirements without hashes](https://github.com/CuriousLearner/til/blob/main/poetry/generate-requirements-without-hashes.md) - 2025-02-28

* [Clear cache for resolving dependencies faster](https://github.com/CuriousLearner/til/blob/main/poetry/clear-cache-for-resolving-dependencies-faster.md) - 2023-02-16

## PSQL

* [Partial Index](https://github.com/CuriousLearner/til/blob/main/psql/partial-index.md) - 2026-02-26

* [VACUUM ANALYZE in PostgreSQL](https://github.com/CuriousLearner/til/blob/main/psql/vacuum-analyze.md) - 2025-10-03

* [Restore database via template](https://github.com/CuriousLearner/til/blob/main/psql/restore-via-template.md) - 2024-06-23

* [Dump and Restore database](https://github.com/CuriousLearner/til/blob/main/psql/dump-and-restore.md) - 2023-07-08

## Pytest

* [Understanding pytest pythonpath and import-mode configuration](https://github.com/CuriousLearner/til/blob/main/pytest/pythonpath-import-mode-configuration.md) - 2025-09-18

* [`caplog` vs `syslog` in pytest – What’s the Difference?](https://github.com/CuriousLearner/til/blob/main/pytest/caplog-vs-syslog.md) - 2025-05-16

* [Run only failed tests and stop at first failure in pytest](https://github.com/CuriousLearner/til/blob/main/pytest/run-failed-test-and-exit-at-first-failure.md) - 2025-03-04

* [Autouse fixtures for common test dependencies](https://github.com/CuriousLearner/til/blob/main/pytest/fixture-autouse.md) - 2025-02-28

* [Run tests that match substring in their name](https://github.com/CuriousLearner/til/blob/main/pytest/run-filtered-tests-by-substring.md) - 2025-02-28

## Python

* [`timedelta.total_seconds()` vs `timedelta.seconds` – A Critical Difference](https://github.com/CuriousLearner/til/blob/main/python/timedelta-total-seconds-vs-seconds.md) - 2025-11-26

* [Handle CORS in a Simple HTTP Server](https://github.com/CuriousLearner/til/blob/main/python/handle-cors-simple-http-server.md) - 2025-02-28

* [Update dependencies in requirements.txt](https://github.com/CuriousLearner/til/blob/main/python/update-dependencies-in-requirements.md) - 2025-02-28

* [Expand home directory paths in `pathlib.Path`](https://github.com/CuriousLearner/til/blob/main/python/pathlib-path-expand-user.md) - 2024-06-23

## React

* [Not to use && for conditional rendering](https://github.com/CuriousLearner/til/blob/main/react/conditional-rendering.md) - 2023-02-12

## SSH

* [Setup SSH Tunneling](https://github.com/CuriousLearner/til/blob/main/ssh/setup-ssh-tunneling.md) - 2023-07-08

## Terraform

* [Reading directly from environment variables](https://github.com/CuriousLearner/til/blob/main/terraform/get-environment-variables.md) - 2025-02-28

* [Zip Lambda code](https://github.com/CuriousLearner/til/blob/main/terraform/zip-lambda-code.md) - 2024-09-06

* [Lifecycle Ignore changes](https://github.com/CuriousLearner/til/blob/main/terraform/lifecycle-ignore-changes.md) - 2024-07-03

## Terragrunt

* [Force unlock state file](https://github.com/CuriousLearner/til/blob/main/terragrunt/force-unlock-state.md) - 2024-09-06

## VIM

* [Open a file on a particular line](https://github.com/CuriousLearner/til/blob/main/vim/open-file-on-line.md) - 2023-02-13

* [Indent and De-indent lines in Vim.](https://github.com/CuriousLearner/til/blob/main/vim/indent-deindent-line.md) - 2023-02-13

* [Open file on a particular pattern in file](https://github.com/CuriousLearner/til/blob/main/vim/open-file-on-pattern.md) - 2023-02-13

* [Use text objects to make efficient changes](https://github.com/CuriousLearner/til/blob/main/vim/text-objects-to-make-efficient-changes.md) - 2023-02-13

* [Remove lines matching a pattern](https://github.com/CuriousLearner/til/blob/main/vim/remove-lines-matching-pattern.md) - 2023-02-13

## VLC

* [Cast video to chromecast](https://github.com/CuriousLearner/til/blob/main/vlc/cast-video-to-chromecast.md) - 2023-02-13

## Wagtail

* [Lazily Refer Snippet in blocks](https://github.com/CuriousLearner/til/blob/main/wagtail/lazily-refer-snippet.md) - 2025-02-28

* [Get blocks in StreamBlock using `blocks_by_name` & `first_block_by_name`](https://github.com/CuriousLearner/til/blob/main/wagtail/get-blocks-in-streamblock.md) - 2024-04-25

* [Many to Many relationship in Wagtail](https://github.com/CuriousLearner/til/blob/main/wagtail/many-to-many-relationship.md) - 2024-04-25

## Yml

* [YAML Anchor Tags using `<<:` and `*` Syntax](https://github.com/CuriousLearner/til/blob/main/yml/anchor-tags.md) - 2024-10-10

* * * * *

### Resources

This repository is inspired from the following respositories:

- [Lacey Williams Henschel's TIL](https://github.com/williln/til)

- [Simon Willison's TIL](https://github.com/simonw/til)
ecosyste.ms

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https://github.com/curiouslearner/til

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README
