Put steps into an install script.

Linux-instructions.md

@@ -17,19 +17,33 @@ emerge -av media-fonts/fira-code
 
 ## Manual Installation
 
-With most desktop-oriented distributions, double-clicking each font file in the ttf folder and selecting “Install font” should be enough. If it isn’t, try this:
+With most desktop-oriented distributions, double-clicking each font file in the ttf folder and selecting “Install font” should be enough. If it isn’t, create and run download_and_install.sh script:
+
+```bash
+#!/bin/bash
+
+fonts_dir="~/.local/share/fonts"
+if [ ! -d ${fonts_dir} ]; then
+    echo "mkdir -p $fonts_dir"
+    mkdir -p ${fonts_dir}
+else
+    echo "Found fonts dir $fonts_dir"
+fi
+
+for type in Bold Light Medium Regular Retina; do
+    file_path="~/.local/share/fonts/FiraCode-${type}.ttf"
+    file_url="https://github.com/tonsky/FiraCode/blob/master/distr/ttf/FiraCode-${type}.ttf?raw=true"
+    if [ ! -e ${file_path} ]; then
+        echo "wget -O $file_path $file_url"
+        wget -O ${file_path} ${file_url}
+    else
+	echo "Found existing file $file_path"
+    fi;
+done
+
+echo "fc-cache -f"
+fc-cache -f
+```
 
-1. `mkdir -p ~/.local/share/fonts`
-2. `touch download.sh`
- 
-3.  ```shell
-    # In download.sh
-    for type in Bold Light Medium Regular Retina; do
-        wget -O ~/.local/share/fonts/FiraCode-${type}.ttf \
-        "https://github.com/tonsky/FiraCode/blob/master/distr/ttf/FiraCode-${type}.ttf?raw=true";
-    done
-    ```
-4. `bash download.sh`
-5. `fc-cache -f`
 
 [More details](https://github.com/tonsky/FiraCode/issues/4)