Test - who's in the house? | Paul Clarkeʼs blog

Blog ≫ 2016 ≫ Test - who's in the house?

Wed Nov 23

This is working quite nicely, here's a sample:

  Back door
  Drive
  HUMAX
  Kitchen away since 08:45
  Macbook
  NAS drive
  Nest Labs Inc.
  Clare away since 08:34
  Paul
  pi 2 (study)
  pi 3 (sense)
  Raspbrewery
  router
  wifi link

Just a sample of course I'm not publishing info on when we go in and out up here... code is something like this:

#!/bin/bash
DOCROOT=/var/www
FOLDER=${DOCROOT}/devices
arp-scan -l --interface=wlan0 --retry=3 | grep 192.168 > /tmp/arp-scan.txt
while read LINE; do
  FILE=$(echo "${LINE}" | cut -f2).txt
  NAME=$(echo "${LINE}" | cut -f3)
  echo ${NAME} > ${FOLDER}/${FILE}
  if [ -f ${FOLDER}/.alias.${FILE} ]; then
    cp ${FOLDER}/.alias.${FILE} ${FOLDER}/${FILE}
  fi
done < /tmp/arp-scan.txt
DATE=$(date +%s)
for FILE in $(ls -1tr ${FOLDER}); do
  MTIME=$(stat -c %Y ${FOLDER}/${FILE})
  DIFF=$(expr ${DATE} - ${MTIME})
  STATUS=
  EXPLANATION=''
  if [ ${DIFF} -gt 60 ]; then
    if [ ${DIFF} -gt 300 ]; then
      EXPLANATION="away since $(ls -l ${FOLDER}/${FILE} | cut -c27-38)"
      STATUS=
    else
      STATUS=
    fi
  fi
  echo ${STATUS} $(cat ${FOLDER}/${FILE}) ${EXPLANATION}
done

I really like unicode in bash scripts, it just looks so wrong ¹.

Hmm at some point the unicode characters like 🖥 and 🎮 all disappeared again...

🕵️

⬅️ Hail Caesar! :: No more swimming until after Christmas ➡️