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diff --git a/users/wpcarro/playbooks/README.md b/users/wpcarro/playbooks/README.md
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+# playbooks
+
+Here's the vision: playbooks for everything - not just software.
diff --git a/users/wpcarro/playbooks/first-of-the-month.org b/users/wpcarro/playbooks/first-of-the-month.org
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+# In total this should take one hour to complete. This is a substantial amount
+# of time, which may disincentivize me from completing it. This time is
+# amortized over the length of its usefulness (i.e. an entire month), so it
+# should be thought of instead as two-minutes worth of work per day that is all
+# being completed upfront.
+* Tasks
+** TODO [10m] create habit template in journal
+** TODO [30m] assess previous month's performance
+** TODO [10m] book massage for the month
+** TODO [10m] create go/hallpass entries (BJJ, VHP)
+** TODO [10m] expense home internet
+** TODO [10m] buy TSLA through tdameritrade.com
diff --git a/users/wpcarro/playbooks/habits.org b/users/wpcarro/playbooks/habits.org
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+* First of the year
+** [1hr] Write a post mortem for the previous year
+* First of the month
+** see ./first-of-the-month.org
+* Payday
+** [10m] Audit Monzo expenses
+** [05m] Review "finances_2020" spreadsheet
+** [05m] Transfer GBP to USD account
+** [10m] Withdraw cash from ATM
+* Morning
+** [00m] Wake up at 7:00
+** [15m] Read
+** [02m] Brush teeth
+** [01m] Make bed
+** [01m] Water plants
+** [10m] 12 rounds of forward folds
+** [05m] 12 rounds Pranayama
+** [30m] Transcendental meditation
+** [10m] Shower
+** [05m] Put on clothes
+* Evening
+** [01m] Layout tomorrow's outfit
+** [01m] Floss
+** [02m] Brush teeth
+** [01m] Mouth wash
+** [30m] Read
+** [01m] Journal daily progress
+* Monday
+** [1hr] Jiu Jitsu
+* Tuesday
+** Work from 6PS
+** [1hr] Jiu Jitsu
+* Wednesday
+** [1hr] Hot Yoga
+** [10m] Shave
+** [15m] Clean apartment sinks
+* Thursday
+* Friday
+** [1hr] Hot Yoga
+* Saturday
+** [10m] Vacuum
+** [30m] Nap
+* Sunday
+** [1hr] Jiu Jitsu
+** [30m] Nap
+** [10m] Shave
+** [05m] Trim nails
+** [05m] Take out trash
+** [05m] Laundry
diff --git a/users/wpcarro/playbooks/hip_opening_challenge/poses.pdf b/users/wpcarro/playbooks/hip_opening_challenge/poses.pdf
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Binary files differdiff --git a/users/wpcarro/playbooks/hip_opening_challenge/progress.org b/users/wpcarro/playbooks/hip_opening_challenge/progress.org
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+# From Lucas Rockwood's 21-day hip challenge from yogabody.com
+* DONE day 1
+** pigeon
+** butterfly
+* DONE day 2
+** blaster
+** squat
+* DONE day 3
+** happy baby
+** thread the needle (supine)
+* DONE day 4
+** frog
+** jackknife blaster
+* DONE day 5
+** lightning bolt
+** scissors
+* DONE day 6
+** zorro
+** supine butterfly (w/ strap)
+* TODO day 7
+** thread the needle (wall)
+** prone butterfly
+* TODO day 8
+** ninja squat
+** chair scissors
+** lateral chain stretch
+* TODO day 9
+** psoas blaster (chair)
+** reclined scissors
+* DONE day 10
+** twisted blaster
+** twisted squat
+* TODO day 11
+** double pigeon
+** bound butterfly
+* TODO day 12
+** eagle fold
+** cross-thread
+* DONE day 13
+** swiss army knife
+** saddle
+* TODO day 14
+** butterfly squat
+** half lightning bolt
+* DONE day 15
+** fallen blaster
+** asymmetric baby
+* DONE day 16
+** standing psoas
+** standing pigeon
+* TODO day 17
+** marichi B
+** long butterfly
+* TODO day 18
+** eagle legs
+** chair squat
+* DONE day 19
+** twisted pigeon
+** bound baby
+* DONE day 20
+** seated pigeon
+** railroad squat
+* DONE day 21
+** thunderbolt
+** yogi squat
diff --git a/users/wpcarro/playbooks/nix_gcr/README.md b/users/wpcarro/playbooks/nix_gcr/README.md
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+# Nix + Google Cloud Run (i.e. GCR)
+
+I'm documenting how I currently deploy projects that I package with Nix on
+Google Cloud Run.
+
+I'd like to automate this workflow as much as possible, and I intend to do just
+that. For now, I'm running things manually until I can design an generalization
+that appeals to me.
+
+## Dependencies
+- `nix-build`
+- `docker`
+- `gcloud`
+
+## Step-by-step
+
+1. Use `nix-build` to create our Docker image for Cloud Run.
+
+```shell
+> nix-build ./cloud_run.nix
+```
+
+This outputs a Docker image at `./result`.
+
+1. Load the built image (i.e. `./result`) into `docker` so that we can tag it
+   and push it to the Google Container Registry (i.e. GCR).
+
+```shell
+> sudo docker load <./result
+```
+
+1. (Optionally) Run the image locally to verify its integrity.
+
+```shell
+> sudo docker run -d -p 8080:4242 <name>:<tag>
+```
+
+1. Tag and push the image to GCR.
+
+```shell
+> sudo docker tag <name>:<label> gcr.io/<google-cloud-project-id>/<name>:<latest>
+```
+
+1. Visit Google Cloud Run; create a new service with "Create Service"; select
+   the uploaded Docker image from the "Container Image URL" field; click
+   "Create" to deploy.
+
+## Notes
+
+You may need to authorize `gcloud` by running the following:
+
+```shell
+> sudo gcloud auth login --no-launch-browser
+```
+
+You must use `sudo` here since the `docker` invocations are prefixed with `sudo`
+as well.
+
+## Todos
+
+- If possible, prefer using a command line tool like `gcloud` to create the
+  Cloud Run service.
diff --git a/users/wpcarro/playbooks/nix_gcr/cloud_run.nix b/users/wpcarro/playbooks/nix_gcr/cloud_run.nix
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+{ pkgs, depot, ... }:
+
+pkgs.dockerTools.buildLayeredImage {
+  name = "gemma";
+  tag = "latest";
+  config.ExposedPorts = {
+    "4242" = { };
+  };
+  config.Env = [
+    "GEMMA_CONFIG=${./config.lisp}"
+  ];
+  config.Cmd = [ "${depot.fun.gemma}/bin/gemma" ];
+  maxLayers = 120;
+}
diff --git a/users/wpcarro/playbooks/nix_gcr/config.lisp b/users/wpcarro/playbooks/nix_gcr/config.lisp
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+;; Example configuration file for Gemma
+
+(config :port 4242
+        :data-dir "/tmp/gemma/")
+
+(deftask bathroom/wipe-mirror 7)
+(deftask bathroom/wipe-counter 7)
+
+;; Bedroom tasks
+(deftask bedroom/change-sheets 7)
+(deftask bedroom/vacuum 10)
+
+;; Kitchen tasks
+(deftask kitchen/normal-trash 3)
+(deftask kitchen/green-trash 5)
+(deftask kitchen/blue-trash 5)
+(deftask kitchen/wipe-counters 3)
+(deftask kitchen/vacuum 5 "Kitchen has more crumbs and such!")
+
+;; Entire place
+(deftask clean-windows 60)
diff --git a/users/wpcarro/playbooks/shell.md b/users/wpcarro/playbooks/shell.md
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+# Shell
+
+I'm making this as an offline reference for some of the commands that I use
+often enough to need to remember but not often enough to *actually* remember.
+
+## Reference
+
+- To kill a process by its port number:
+
+```shell
+$ fuser 8080/tcp
+```
diff --git a/users/wpcarro/playbooks/sqlite3.md b/users/wpcarro/playbooks/sqlite3.md
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+# SQLite3
+
+Creating a reference for SQLite that I can access when I'm offline
+(e.g. traveling in an airplane).
+
+## Benefits
+
+I enjoy using SQLite because it's lightweight and simple. Instead of networking
+microservices, I can oftentimes just create a simple `db.sqlite3` file and get
+significant mileage without much tooling overhead.
+
+## Limitations
+
+SQLite has some limitations; here are some of the limitations that I have encountered.
+
+- SQLite **disables** support for `FOREIGN KEY` by default. Enable it with:
+
+```
+sqlite> PRAGMA foreign_keys = ON;
+```
+
+- SQLite has no `BOOLEAN` type; it uses 0 and 1 instead.
+
+```
+sqlite> SELECT TRUE;
+TRUE
+----------
+1
+sqlite> SELECT FALSE;
+FALSE
+----------
+0
+```
+
+- SQLite has no `DATETIME` type; it uses `TEXT` instead.
+
+```
+sqlite> SELECT datetime('now');
+datetime('now')
+-------------------
+2020-07-26 09:52:32
+```
+
+## Reference
+
+The following should serve as a useful reference for working with SQLite.
+
+### Schema
+
+```sql
+CREATE TABLE IF NOT EXISTS Movies (
+  title TEXT NOT NULL,
+  year INTEGER,
+  PRIMARY KEY (title)
+);
+
+ALTER TABLE Movies ADD COLUMN rating DEFAULT 0.0;
+
+DROP TABLE Movies;
+```
+
+### Queries
+
+The following queries should come in handy as a reference:
+
+```
+sqlite> -- I'm using an intentionally incorrect date here for the subsequent UPDATE.
+sqlite> INSERT INTO Movies (title, year) VALUES ('Toy Story 3', 2100);
+sqlite> SELECT * FROM Movies WHERE year IS NULL;
+sqlite> UPDATE Movies SET year = 2010 WHERE title = 'Toy Story 3';
+sqlite> -- % is like .* in a regex
+sqlite> DELETE FROM Movies WHERE title LIKE 'Toy Story%';
+```
+
+## Command Line
+
+- Create a `~/.sqliterc` file with the following contents:
+
+```
+.mode column
+.headers on
+```
+
+- To start an interactive session:
+
+```shell
+$ sqlite3 db.sqlite3
+```
+
+- To create a SQLite database from a `.sql` file:
+
+```shell
+$ sqlite3 db.sqlite3 <db.sql
+```
+
+- To reload changes to a `.sql` file while in an interactive session:
+
+```
+sqlite> .read db.sql
+```
+
+## Miscellaneous
+
+- For a web-browser-based SQLite viewer, run the following:
+
+```shell
+$ sqlite_web db.sqlite3
+```
+
+- To import a CSV:
+
+```
+sqlite> .mode csv <table-name>
+sqlite> .import path/to/file.csv <table-name>
+```