[bash] rename bash/rc and bash/bash.d

bash/bashrc.d/network.bash

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+function data_url() {
+  if [ -z "$1" ]; then
+    cat << EndOfMessage
+Create a data URL that can be directly used in HTML.
+Usage: data_url <path_to_file>
+EndOfMessage
+    return
+  fi
+	local mime_type base64
+  mime_type=$(file -b --mime-type "$1")
+  if [[ "$mime_type" == 'image/svg' ]]; then
+    mime_type='image/svg+xml'
+  fi
+  base64=$(base64 "$1")
+	echo "data:$mime_type;base64,$base64";
+}