26 lines
760 B
Bash
Executable File
26 lines
760 B
Bash
Executable File
#!/bin/bash
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prevstatus="unknown"
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while true
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do
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projip=$(arp -an|awk -F'[()]' '/00:50:41:79:d1:34/{print $2}')
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# from the acer webpage we read that bytes 30-31 contain 00 if poer off and 01 if power on
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# we only test if 01, because if off, it can also give no response
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# but seems to be bytes 32-33 more accurate
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statusbyte="$(wget -qO - 'http://10.2.113.104/tgi/return.tgi?query=info'|awk -F'[<>]' '/<info>/{print substr($3,31,2)}')"
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if [ "$statusbyte" = "01" ]
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then
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if [ "$prevstatus" != "on" ]
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then
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logger -t $(basename $0) "$$ Projector is on"
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prevstatus="on"
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fi
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else
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if [ "$prevstatus" != "off" ]
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then
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logger -t $(basename $0) "$$ Projector is off"
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prevstatus="off"
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fi
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fi
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sleep 10
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done
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