Merge branch 'dev' into vhs

basics/yes.md

@@ -0,0 +1,24 @@
+---
+title: "yes"
+tags: [ "basics" ]
+---
+# The Best Linux Program: `yes`
+
+The program `yes` prints the word `yes` to your terminal until you cancel it, perhaps with 'Control + c'.
+Or technically it prints `yes\n`, meaning `yes` and then a new line (like pressing the Return key).
+
+This is extremely powerful.
+
+If you ever want to automatically install something which persistently nags you with `do you want to do the thing? [y/N]?`, then you can just pipe `yes` into that program, and it will answer 'yes' to all questions.
+
+```bash
+yes | $INSTALL_SCRIPT_FILE.sh
+```
+
+This works best for disposable systems, like VMs or containers.
+Try this on a live system, and you might find out that you should have read that message fully.
+
+```bash
+yes | yay
+```
+

distros/void/Brand_Name_Wallpaper.md

@@ -0,0 +1,33 @@
+---
+title: "Brand Name Wallpaper"
+tags: [ "void" ]
+---
+
+To automatically stick the logo onto your background, do these commands in the directory.
+
+Get the void linux logo from wikipedia
+
+```bash
+wget https://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Void_Linux_logo.svg/256px-Void_Linux_logo.svg.png?20170131170632
+```
+
+Rename it, and resize it (the standard size is too small for most wallpapers)
+
+```bash
+convert -resize 200% '256px-Void_Linux_logo.svg.png?20170131170632' void-logo.png
+```
+Download a pretty wallpaper
+
+```bash
+wget http://wallpapercave.com/wp/Wlm9Gv0.jpg
+```
+
+Put the void logo on all *jpg and *png images
+
+```bash
+for x in *.jpg
+	do
+	composite -compose multiply -gravity Center void-logo.png "$x" "$x"
+done
+```
+

system/bash_tricks.md

@@ -12,6 +12,11 @@ See changes in a directory, as it changes:
 
 `watch -d ls *directory*`
 
+Or use the `-g` flag to exit once the output changes.
+This command will look at whether you're connected to the internet, and turn into a rainbow once the connection hits.
+
+> watch -g ip address && clear && ip address | lolcat
+
 ## Automatic Renaming
 
 There are a bunch of files:
@@ -34,17 +39,19 @@ done
 
 IFS is the field separator.  This is required to denote the different files as marked by a new line, and not the spaces.
 
+(Alternatively, just install `renameutils` and do `rename Column Alice *`)
+
 ## Arguments and Input
 
 The `rm' program takes arguments, but not `stdin' from a keyboard, and therefore programs cannot pipe results into rm.
-
+To fix this, use `xargs` to turn the stdin into an argument.
-That said, we can sometimes pipe into rm with `xargs rm' to turn the stdin into an argument.  For example, if we have a list of files called `list.txt' then we could use cat as so:
+For example, if we have a list of files called `list.txt' then we could use cat as so:
 
 ```bash
 cat list.txt | xargs rm
 ```
 
-... *However*, this wouldn't work if spaces were included, as rm would take everything literally.
+Of course if spaces are included in the file, you would have to account for that.
 
 ## Numbers
 
@@ -71,3 +78,22 @@ find . -type f -exec md5sum '{}' ';' | sort | uniq --all-repeated=separate -w 15
 ```bash
 cat /dev/urandom | tr -cd [:alnum:] | dd bs=1 count=200 status=none && echo
 ```
+
+## Temporary Working Directory
+
+Try something out in a random directory in `/tmp` so the files will be deleted when you next shut down.
+
+```bash
+mktemp -d
+```
+
+That gives you a random directory to mess about in.
+
+```bash
+   dir=$(mktemp -d)
+   for x in {A..Z}; do
+      fortune > "$dir"/chimpan-$x
+   done
+   cd $dir
+```
+