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10
README.md
10
README.md
@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
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For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
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_1585 TILs and counting..._
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_1589 TILs and counting..._
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See some of the other learning resources I work on:
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- [Ruby Operator Lookup](https://www.visualmode.dev/ruby-operators)
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@@ -195,7 +195,7 @@ See some of the other learning resources I work on:
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- [Aliasing An Ansible Host](devops/aliasing-an-ansible-host.md)
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- [Allow Cross-Origin Requests To Include Cookies](devops/allow-cross-origin-requests-to-include-cookies.md)
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- [Allow HTTPS Through Your UFW Firewall](devops/allow-https-through-your-ufw-firewall.md)
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- [Check For Cached Site Assocation File For iOS](devops/check-for-cached-site-association-file-for-ios.md)
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- [Check For Cached Site Association File For iOS](devops/check-for-cached-site-association-file-for-ios.md)
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- [Check The Status of All Services](devops/check-the-status-of-all-services.md)
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- [Check The Syntax Of nginx Files](devops/check-the-syntax-of-nginx-files.md)
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- [Connect To An RDS PostgreSQL Database](devops/connect-to-an-rds-postgresql-database.md)
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@@ -356,6 +356,7 @@ See some of the other learning resources I work on:
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- [Quicker Commit Fixes With The Fixup Flag](git/quicker-commit-fixes-with-the-fixup-flag.md)
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- [Rebase Commits With An Arbitrary Command](git/rebase-commits-with-an-arbitrary-command.md)
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- [Reference A Commit Via Commit Message Pattern Matching](git/reference-a-commit-via-commit-message-pattern-matching.md)
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- [Reference Commits Earlier Than Reflog Remembers](git/reference-commits-earlier-than-reflog-remembers.md)
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- [Remove Untracked Files From A Directory](git/remove-untracked-files-from-a-directory.md)
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- [Rename A Remote](git/rename-a-remote.md)
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- [Renaming A Branch](git/renaming-a-branch.md)
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@@ -670,6 +671,7 @@ See some of the other learning resources I work on:
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- [Set A Window To Its Default Zoom Level](mac/set-a-window-to-its-default-zoom-level.md)
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- [Specify App When Opening From Command Line](mac/specify-app-when-opening-from-command-line.md)
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- [Start Amphetamine Session With AppleScript](mac/start-amphetamine-session-with-applescript.md)
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- [Uninstall LogiTech G Hub From Mac](mac/uninstall-logitech-g-hub-from-mac.md)
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- [Use A Different Font With iTerm2](mac/use-a-different-font-with-iterm2.md)
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- [Use Default Screenshot Shortcuts With CleanShot X](mac/use-default-screenshot-shortcuts-with-cleanshot-x.md)
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- [View All Windows Of The Current App](mac/view-all-windows-of-the-current-app.md)
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@@ -768,7 +770,7 @@ See some of the other learning resources I work on:
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- [Check If Clusters Are Upgrade Compatible](postgres/check-if-clusters-are-upgrade-compatible.md)
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- [Check If The Local Server Is Running](postgres/check-if-the-local-server-is-running.md)
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- [Check If User Role Exists For Database](postgres/check-if-user-role-exists-for-database.md)
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- [Check Table For Any Oprhaned Records](postgres/check-table-for-any-orphaned-records.md)
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- [Check Table For Any Orphaned Records](postgres/check-table-for-any-orphaned-records.md)
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- [Checking Inequality](postgres/checking-inequality.md)
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- [Checking The Type Of A Value](postgres/checking-the-type-of-a-value.md)
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- [Clear The Screen In psql](postgres/clear-the-screen-in-psql.md)
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@@ -1535,6 +1537,7 @@ See some of the other learning resources I work on:
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- [Get Matching Filenames As Output From Grep](unix/get-matching-filenames-as-output-from-grep.md)
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- [Get The SHA256 Hash For A File](unix/get-the-sha256-hash-for-a-file.md)
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- [Get The Unix Timestamp](unix/get-the-unix-timestamp.md)
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- [Get Word Count For All Files In Git Repo](unix/get-word-count-for-all-files-in-git-repo.md)
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- [Global Substitution On The Previous Command](unix/global-substitution-on-the-previous-command.md)
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- [Globbing For All Directories In Zsh](unix/globbing-for-all-directories-in-zsh.md)
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- [Globbing For Filenames In Zsh](unix/globbing-for-filenames-in-zsh.md)
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@@ -1553,6 +1556,7 @@ See some of the other learning resources I work on:
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- [Killing A Frozen SSH Session](unix/killing-a-frozen-ssh-session.md)
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- [Last Argument Of The Last Command](unix/last-argument-of-the-last-command.md)
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- [Less With Style](unix/less-with-style.md)
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- [Limit Protocols Used In A cURL Command](unix/limit-protocols-used-in-a-curl-command.md)
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- [List All Fonts On Your Machine](unix/list-all-fonts-on-your-machine.md)
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- [List All The Enabled ZSH Options](unix/list-all-the-enabled-zsh-options.md)
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- [List All Users](unix/list-all-users.md)
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34
git/reference-commits-earlier-than-reflog-remembers.md
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34
git/reference-commits-earlier-than-reflog-remembers.md
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@@ -0,0 +1,34 @@
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# Reference Commits Earlier Than Reflog Remembers
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While preparing some stats for a recent blog post on [A Decade of
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TILs](https://www.visualmode.dev/a-decade-of-tils), I ran into an issue
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referencing chuncks of time further back than 2020.
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```bash
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❯ git diff --diff-filter=A --name-only HEAD@{2016-02-06}..HEAD@{2017-02-06} -- "*.md"
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warning: log for 'HEAD' only goes back to Sun, 20 Dec 2020 00:26:27 -0600
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warning: log for 'HEAD' only goes back to Sun, 20 Dec 2020 00:26:27 -0600
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```
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This is because `HEAD@...` is a reference to the `reflog`. The `reflog` is a
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local-only log of objects and activity in the repository. That date looks
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suspiciously like the time that I got this specific machine and cloned the
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repo.
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In order to access this information, I need a different approach of finding
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references that bound these points in time.
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How about asking `rev-list` for the first commit it can find before the given
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dates in 2017 and 2016 and then using those.
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```bash
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❯ git rev-list -1 --before="2017-02-07 00:00" HEAD
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17db6bc4468616786a8f597a10d252c24183d82e
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❯ git rev-list -1 --before="2016-02-07 00:00" HEAD
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f1d3d1f796007662ff448d6ba0e3bbf38a2b858d
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❯ git diff --diff-filter=A --name-only f1d3d1f796007662ff448d6ba0e3bbf38a2b858d..17db6bc4468616786a8f597a10d252c24183d82e -- "*.md"
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# git outputs a bunch of files ...
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```
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17
mac/uninstall-logitech-g-hub-from-mac.md
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17
mac/uninstall-logitech-g-hub-from-mac.md
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@@ -0,0 +1,17 @@
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# Uninstall LogiTech G Hub From Mac
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I rarely uninstall software from my Mac. And unless the software is nice enough
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to provide a clear 'Uninstall' flow, it is not straightforward how to do it. In
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fact, it probably varies quite a bit from app to app.
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In the case of LogiTech's G Hub, I was able to find the following instructions
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for uninstalling it. The thing of note is that the updater app can take an
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`--uninstall` flag.
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```bash
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sudo /Applications/lghub.app/Contents/MacOS/lghub_updater.app/Contents/MacOS/lghub_updater --uninstall
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```
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I still had to remove the app launcher from my `Applications` directory.
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[source](https://www.reddit.com/r/LogitechG/comments/bluth5/comment/lbhctx1/)
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32
unix/get-word-count-for-all-files-in-git-repo.md
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32
unix/get-word-count-for-all-files-in-git-repo.md
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@@ -0,0 +1,32 @@
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# Get Word Count For All Files In Git Repo
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As part of gathering numbers for [A Decade of TILs](), I wanted to get an word
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count of all the TIL markdown files I've committed to this project over its 10
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year history. By using `git ls-files` with a pattern, I can get a list of all
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file names. Then with `xargs` I can pass that entire list to `wc -w` which
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gives a word count of each. The final line that `wc -w` outputs is a sum total
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of all the file word counts. Lastly, piping that through `tail -n1` gives me
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just that last total count line.
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```bash
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$ git ls-files "*/**.md" | xargs wc -w | tail -n1
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206816 total
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```
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Since the `tail -n1` obfuscates what the `wc -w` is doing, here is what that
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looks like before that final pipe.
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```bash
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$ git ls-files "*/**.md" | tail -n3 | xargs wc -w
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115 zsh/add-to-the-path-via-path-array.md
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190 zsh/link-a-scalar-to-an-array.md
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214 zsh/use-a-space-to-exclude-command-from-history.md
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519 total
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```
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I can even clean up the final output a bit more with `awk`:
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```bash
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$ git ls-files "*/**.md" | xargs wc -w | tail -n1 | awk '{print $1}'
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206816
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```
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27
unix/limit-protocols-used-in-a-curl-command.md
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27
unix/limit-protocols-used-in-a-curl-command.md
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@@ -0,0 +1,27 @@
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# Limit Protocols Used In A cURL Command
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I was about to install [`atuin`](https://github.com/atuinsh/atuin). I went to
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their _Quick Start_ section to grab whatever command I would need to install
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it. It was a `curl` statement piped to `sh`. The thing that caught my attention
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though was I `curl` flag that I didn't recognize — `--proto`.
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> Tells curl to limit what protocols it may use for transfers.
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Using `curl --proto '=https' ...` we can enforce that only an `https` URL can
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be used in this command.
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Here is what happens if I try to run the `atuin`-provided `curl` command after
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I have downgraded their URL to be `http`:
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```bash
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curl --proto '=https' --tlsv1.2 -LsSf http://setup.atuin.sh | sh
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curl: (1) Protocol "http" not supported or disabled in libcurl
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```
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It doesn't even attempt the request. The protocol is considered unsupported and
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the command immediately fails.
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In addition to only installing software we trust, we should make sure we are
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only doing so over a protocol we trust (namely, `https`).
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See `man curl` for more details, including about the modifiers (`=`, `+`, `-`).
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Reference in New Issue
Block a user