Add Search For Homebrew Packages To Install as a Unix TIL

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1366 TILs and counting..._
+_1368 TILs and counting..._
 
 ---
 
@@ -903,6 +903,7 @@ _1366 TILs and counting..._
 - [Schedule Sidekiq Jobs Out Into The Future](rails/schedule-sidekiq-jobs-out-into-the-future.md)
 - [Secure Passwords With Rails And Bcrypt](rails/secure-passwords-with-rails-and-bcrypt.md)
 - [Select A Select By Selector](rails/select-a-select-by-selector.md)
+- [Select A Specific Rails Version To Install](rails/select-a-specific-rails-version-to-install.md)
 - [Select Value For SQL Counts](rails/select-value-for-sql-counts.md)
 - [Serialize With fast_jsonapi In A Rails App](rails/serialize-with-fast-jsonapi-in-a-rails-app.md)
 - [Set A Timestamp Field To The Current Time](rails/set-a-timestamp-field-to-the-current-time.md)
@@ -1371,6 +1372,7 @@ _1366 TILs and counting..._
 - [Safely Edit The Sudoers File With Vim](unix/safely-edit-the-sudoers-file-with-vim.md)
 - [Saying Yes](unix/saying-yes.md)
 - [Search Files Specific To A Language](unix/search-files-specific-to-a-language.md)
+- [Search For Homebrew Packages To Install](unix/search-for-homebrew-packages-to-install.md)
 - [Search History](unix/search-history.md)
 - [Search Man Page Descriptions](unix/search-man-page-descriptions.md)
 - [Securely Remove Files](unix/securely-remove-files.md)

rails/select-a-specific-rails-version-to-install.md

@@ -0,0 +1,28 @@
+# Select A Specific Rails Version To Install
+
+We can install a specific Rails version with `gem` using the version flag.
+
+```bash
+$ gem install rails --version 7.1.3
+```
+
+That's only if we already know which specific version we are intending to
+install.
+
+A better version of this would show us a list of available version and let us
+select the one we want.
+
+We can do this by fetching all remote Rails versions with `gem`, splitting that
+output up into a single version per line, and then piping that to an `fzf`
+prompt. The version we navigate to and select will be fed into the `gem
+install` command.
+
+```bash
+gem install rails --version $(
+  gem list rails --exact --remote --all \
+  | sed -n 's/.*(\([^)]*\)).*/\1/p' \
+  | tr ',' '\n' \
+  | sed 's/^ //' \
+  | fzf
+)
+```

unix/search-for-homebrew-packages-to-install.md

@@ -0,0 +1,33 @@
+# Search For Homebrew Packages To Install
+
+Let's say we want to install the latest version of PostgreSQL with `brew`, but
+we aren't sure either what formulas are available nor what the exact name would
+be.
+
+We can run a search with the `brew search` subcommand to get an idea of what is
+available.
+
+If I run this for even the shorthand of `postgres`, I get a useful set of
+results showing me what versions I already have installed and what else is
+available.
+
+```bash
+$ brew search postgres
+==> Formulae
+check_postgres    postgresql@11 ✔   postgresql@13     postgresql@15     postgrest         postgis
+postgresql@10     postgresql@12     postgresql@14     postgresql@16     qt-postgresql
+
+==> Casks
+navicat-for-postgresql               postgres-unofficial                  sqlpro-for-postgres
+postbird                             postgrespreferencepane
+
+If you meant "postgres" specifically:
+postgresql breaks existing databases on upgrade without human intervention.
+
+See a more specific version to install with:
+  brew formulae | grep postgresql@
+```
+
+I can then go on to run `brew install postgresql@16` to get the latest.
+
+See `brew search --help` for more details.