add update_discord script

update_discord.sh

@@ -0,0 +1,26 @@
+function update_discord(){
+  verbose=1
+
+  mkdir -p "$HOME/Downloads/discord-update"
+  cd "$HOME/Downloads/discord-update"
+  curl -L -I "https://discord.com/api/download/stable?platform=linux&format=deb" -o discord.head
+
+  uri_old="$(cat discord.head.old | grep location | sed 's/location: //' )"
+  uri_new="$(cat discord.head | grep location | sed 's/location: //')"
+
+  if [ "$verbose" == 1 ]; then echo "uri_old: $uri_old"; fi
+  if [ "$verbose" == 1 ]; then echo "uri_new: $uri_new"; fi
+
+  if [ "$uri_old" != "$uri_new" ]; then
+    cp "discord.head" "discord.head.old"
+
+    if [ "$verbose" == 1 ]; then echo "Downloading discord.deb"; fi
+    curl -L "https://discord.com/api/download/stable?platform=linux&format=deb" -o discord.deb
+
+    if [ "$verbose" == 1 ]; then echo "Updating discord.deb"; fi
+    sudo apt install ./discord.deb
+  fi
+
+}
+
+update_discord