Merge branch 'dev' into vhs

basics/Joyous_ASCII.md

@@ -6,7 +6,20 @@ tags: [ "fun" ]
 - `asciiquarium`
 - `cbonsai -lim "$(fortune)"`
 
-```bash
+```sh
 cow=$(cowsay -l | sort -R | head  -1)
 fortune -s | figlet | cowsay -nf $cow | lolcat
 ```
+
+Watch the [Collatz Conjecture](https://en.wikipedia.org/wiki/Collatz_conjecture) collapse:
+
+```sh
+x="$(du -sc ~/.cache | tr -d '[:alpha:]' | tail -1)"
+until [ "$x" -eq "1" ]; do
+    test "$(( x % 2 ))" -eq 0 && x=$(( x / 2 )) || \
+        x=$(( x * 3 + 1 ))
+    clear -x
+    figlet "$x" | lolcat
+    sleep 1
+done
+```

basics/at.md

@@ -1,6 +1,6 @@
 ---
 title: "at"
-tags: [ "Basics" ]
+tags: [ "Basics", "time" ]
 ---
 Install with:
 

basics/basics.md

@@ -342,11 +342,12 @@ apt install $PROGRAM
 
 Remove `lolcat`, because it's useless:
 
-```bash
+```sh
 sudo apt remove lolcat
 ```
 
-... and that's pretty much it.  You can move, create, destroy, install things, and look things up.
+...and that's pretty much it.
+You can move, create, destroy, install things, and look things up.
 
 # Review
 

basics/clock.md

@@ -1,6 +1,6 @@
 ---
 title: "clock"
-tags: [ "Basics" ]
+tags: [ "Basics", "time" ]
 ---
 
 Show system time:

basics/cron.md

@@ -1,6 +1,6 @@
 ---
 title: "cron"
-tags: [ "Basics" ]
+tags: [ "Basics", "time" ]
 ---
 # Cronie
 

basics/locale.md

@@ -1,6 +1,6 @@
 ---
 title: "locale"
-tags: [ "Basics" ]
+tags: [ "Basics", "time" ]
 ---
 
 Your locale tells the computer your location, preferred time-and-date format, standard language, papersize, et c.

basics/locating.md

@@ -6,59 +6,30 @@ tags: [ "Basics" ]
 
 `type` shows what kind of thing you're running, be it an alias, function, or binary program.
 
-```bash
-type cmus
+```sh
+type cd
+type ls
+type -P ls
+type -a cat
 ```
 
 ![where is cmus?](/tapes/which.gif)
 
 # Whereis the Program
 
-Ask where the `angband` program is, along with all its configuration files:
+Where is `grep` and all its configuration files?
 
-`whereis angband`
-
-Also `which` shows where a binary file (the program) is, 
-
-```bash
-which cmus
+```sh
+whereis grep
 ```
 
-# Search Instantly with `plocate`
+Which one of these is the binary file which you actually use?
 
-You can search every file on the computer instantly by installing `plocate`.
-
-Once installed, run `sudo updatedb` to create the database of (nearly) every file on the computer.
-
-Check how big the database is:
-
-```bash
-du -h /var/lib/plocate/plocate.db
+```sh
+which grep
 ```
 
-Once you have the database, you can find nearly any file instantly.
+# More
 
-- Search for gifs: `locate .gif`
-- Search for gifs in the `/usr/` directory: `locate /usr/ .gif`
-- Search for jpg images with 'dog' or 'Dog' in the name: `locate -i dog jpg`
-- Search for videos: `plocate --regex '.mp4$|.mkv$|.wmv$|.webm$|.mov$|.avi$'`
-
-For best results, run `updatedb` regularly, perhaps in [crontab](../system/cron.md).
-
-## Search More Places
-
-`plocate` will not search `/tmp/`, because nobody cares about those files, and won't search inside `/mnt/`, because that's where USB sticks get mounted, so the files keep changing as USB sticks come and go.
-
-Change where `plocate` searches by editing the configuration file at `/etc/updatedb.conf`.
-
-By default, the `/mnt` directory is 'pruned' from the database.
-So if you want to search `/mnt` for videos, remove the word `/mnt` from the configuration file.
-
-
-```bash
-cat /etc/updatedb.conf
-sudo sed 's#/mnt/##' /etc/updatedb.conf
-sudo updatedb
-plocate --regex '.mp4$|.mkv$|.wmv$|.webm$|.mov$|.avi$'
-```
+- [Search instantly with `plocate`](data/search_system.md)
 

basics/time.md

@@ -1,6 +1,6 @@
 ---
 title: "time"
-tags: [ "Basics" ]
+tags: [ "Basics", "time" ]
 ---
 # systemd