--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/instance_statistics_evolution.sh	Thu May 11 21:03:45 2017 +0200
@@ -0,0 +1,28 @@
+#! /bin/zsh
+#
+# Instance statistics for a given period (default: 4 last weeks)
+#
+# Usage: $0 [[--server INSTANCE] Number_of_weeks]
+#
+# Mikael
+
+if [[ $1 == "--server" || $1 == "-i" ]]; then
+    opt=("--server" "$2")
+    shift 2
+fi
+
+w=${1:-4}
+
+TMPL='({{(.date | fromunix).Format "2006-01-02"}}) {{.instance_name}}: {{printf "%.0f users, %.0f statuses\n" .users .statuses}}'
+
+typeset -i wa="$w"
+while (( wa >= 0 )); do
+    when="$wa weeks ago"
+    s=$(date +%s -d "$when")
+    stats="$(madonctl instance ${opt[*]} --stats --template "$TMPL" \
+            --start "$(( s-3600 ))" --end   "$s" | tail -1)"
+    if [[ -n $stats ]]; then
+        echo "$when $stats"
+    fi
+    (( wa-=1 ))
+done