examples: add examples folder

deploy-ubuntu.sh is a simple bash script combining multiple ogcli
commands used to format and deploy some image.

poweroff.cron is a sample cron file used to schedule client
poweroff.

examples/deploy-ubuntu.sh

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+#!/usr/bin/env bash
+
+function check_client_status {
+  local try=0
+  local ip="$1"
+  local state="$2"
+  local max_tries=${3-10}
+
+  while [ "$(./ogcli list clients | jq ".clients[] | select(.state != \"$state\" and .addr == \"$ip\")")" == "" ]
+  do
+    if [ "$try" -eq "$max_tries" ]; then
+      echo "Timeout!"
+      exit
+    fi
+
+    try=$((try+1))
+    echo "Waiting for client to exit from state $state..."
+    sleep 10
+  done
+}
+
+IP="192.168.56.11"
+
+echo "Sending WoL to client $IP"
+./ogcli send wol --client-ip "$IP"
+
+check_client_status $IP "WOL_SENT"
+echo "Client is ready... partitioning client"
+./ogcli setup disk --type dos --num 1 --part 1,LINUX,EXT4,40G --part 4,CACHE,CACHE,10G --format 1,4 --client-ip "$IP"
+# ./ogcli send refresh --client-ip "$IP"
+
+check_client_status $IP "BSY"
+echo "Client is ready... restoring image"
+./ogcli restore image --id 1 --disk 1 --part 1 --type tiptorrent --client-ip "$IP"
+
+check_client_status $IP "BSY" 100
+echo "Client is ready... setting boot mode to first disk first partition"
+./ogcli set mode --mode 11 --client-ip "$IP"
+
+check_client_status $IP "BSY"
+echo "Client is ready... shutting down client"
+./ogcli send poweroff --client-ip "$IP"

examples/poweroff.cron

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+# This cron task automatically powers off all clients
+# specified at 22:00 local time starting Monday until
+# Friday.
+#
+# You can specify clients to shutdown using several parameters
+# like --client-ip, --room-id, or even --center-id.
+#
+# Usually on debian based distros one can insert cron tasks
+# using "crontab -e".
+
+0 22 * * 1-5 ogcli send poweroff --client-ip 192.168.56.11