show arch packages to be updated

i3/.config/i3/i3blocks.conf

@@ -28,7 +28,13 @@ command=/usr/lib/i3blocks/$BLOCK_NAME
 separator_block_width=15
 markup=none
 
-[mail_gmail]
+[arch-updates]
+command=~/.config/i3/i3blocks/archupdates
+label=
+color=#FF0000
+interval=3600
+
+[mail-gmail]
 command=~/.config/i3/i3blocks/gmail
 label=G
 instance=~/.i3mail/gmail
@@ -36,7 +42,7 @@ interval=60
 color=#00FF00
 separator=false
 
-[mail_andthensome]
+[mail-andthensome]
 command=~/.config/i3/i3blocks/gmail
 label=A 
 instance=~/.i3mail/andthensome

i3/.config/i3/i3blocks/archupdates

@@ -0,0 +1,12 @@
+#!/bin/sh
+# Arch upgradeable packages
+
+list=`pacman -Sup 2> /dev/null`
+
+if [ "$list" == ":: Starting full system upgrade..." ]; then
+    count=""
+else
+    count=`echo "$list" | wc -l`
+fi
+
+echo "$count"