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  32. <h2>Ultimate Notifier Script</h2>
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  35. <a href='ultimatenotifier.de.html'>de</a> | <a href='ultimatenotifier.html'>en</a>
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  40. <a class="FlattrButton" href="http://www.xythobuz.de/ultimatenotifier.html" title="Ultimate Notifier Script">Sending Push Notifications to an iPhone from a Bash Script</a>
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  49. <h1>Ultimate Notifier Script</h1>
  50. <p>The service <a href="http://ultimatenotifier.com">Ultimate Notifier</a> allows you to send Push-Notification to your iPhone easily. Based on this, you can write shell scripts that are executed regularly via cron. This could inform you about a changed public IP. To do this, save this script somewhere:</p>
  51. <pre class="sh_sh">
  52. #!/bin/sh
  53. ipfile=".currentip"
  54. service="ifconfig.me"
  55. user="username"
  56. pass="password"
  57. message="IP:"
  58. ip=`curl -s $service`
  59. touch $ipfile
  60. lastip=`cat $ipfile`
  61. if [ "$ip" != "$lastip" ]; then
  62. echo "New public IP. Sending notification!"
  63. curl -s "https://www.ultimatenotifier.com/items/User/send/${user}/message=${message}%20${ip}/password=${pass}"
  64. fi
  65. cp /dev/null $ipfile
  66. echo $ip > $ipfile
  67. </pre>
  68. <p>It gets the current public IP via <a href="http://ifconfig.me">ifconfig.me</a> and compares it to the IP stored in a file named .currentip. If they differ, a Push-Notification will be sent and the new IP stored.</p>
  69. <p>With the command</p>
  70. <pre>crontab -e</pre>
  71. <blockquote>
  72. <p>You can add a cronfile entry. To execute the script every 30 minutes, use this:</p>
  73. </blockquote>
  74. <pre>*/30 * * * * /Users/anon/bin/ipnotify.sh</pre>
  75. <p>You can find the code on <a href="https://github.com/xythobuz/Snippets/blob/master/ipnotify.sh">GitHub</a>, too!</p>
  76. <p>Of course, you can extend this principle. This script is called every 5 minutes on my server to notify me about eventual problems.</p>
  77. <pre class="sh_sh">
  78. #!/bin/bash
  79. # Checks for Health of Server and sends notifications to iPhone in case of error
  80. # Checks for:
  81. # - HDD Temperature
  82. # - HDD Space
  83. # - CPU Usage
  84. # Sends a notification via UltimateNotifier
  85. # Depends on bash, wget, hddtemp, grep, awk, sed, ps, sort and head.
  86. # ------------------------------
  87. # ------------------------------
  88. # Your UltimateNotifier Password
  89. UNUsername="YourUserName"
  90. UNPassword="YourPassWord"
  91. # Check for free space
  92. hddMountPoint="bay" # greps for this in mounted hdds
  93. maxPercentFull=75 # minimum percentage to send notification
  94. # Check for CPU Usage of processes
  95. maxCpuUsage=750 # Is in tenths of a percent (420 => 42%)
  96. # Checks hdd temperature
  97. # Depends on hddtemp tool
  98. hddDevice="/dev/sda"
  99. maxHddTemp=50
  100. # ------------------------------
  101. # ------------------------------
  102. # Set $message to your Message and then call this...
  103. function sendNotification {
  104. wget "https://www.ultimatenotifier.com/items/User/send/${UNUsername}/message=${message}/password=${UNPassword}" -O /dev/null -q
  105. echo "$message"
  106. }
  107. # ------------------------------
  108. # ------------------------------
  109. # Check for hdd temperature
  110. hddTemp=`/usr/sbin/hddtemp ${hddDevice} | awk '{print $4}' | awk -F '°' '{print $1}'`
  111. if [ $hddTemp -gt $maxHddTemp ]; then
  112. message="Marvin's HDD has reached ${hddTemp}°C!"
  113. sendNotification
  114. fi
  115. # Check for free space on hdd
  116. spaceUsed=`df -h | grep ${hddMountPoint} | awk '{print $5}' | sed 's/%//'`
  117. if [ $spaceUsed -gt $maxPercentFull ]; then
  118. message="Marvin's HDD is ${spaceUsed}% full!"
  119. sendNotification
  120. fi
  121. # Check for most cpu intensive process, report if usage too high
  122. processName=`ps -e -o cp,args | sed -e 's/^[ \\t]*//' | awk -F " " '{print $1, $2}' | sed -e '1d' | sort -rn | head -1 | awk '{print $2}'`
  123. processUsage=`ps -e -o cp,args | sed -e 's/^[ \\t]*//' | awk -F " " '{print $1, $2}' | sed -e '1d' | sort -rn | head -1 | awk '{print $1}'`
  124. if [ $processUsage -gt $maxCpuUsage ]; then
  125. processUsage=`echo "${processUsage} / 10.0" | bc -q`
  126. message="${processName} needs ${processUsage}% CPU!"
  127. sendNotification
  128. fi
  129. </pre>
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