107 lines
1.9 KiB
Bash
Executable File
107 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# on-ac-power-state-change
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# Copyright 2019 Mike Peralta
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# Released under the MIT license (https://opensource.org/licenses/MIT)
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# Check out my music https://www.MikePeralta.com
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# This script will execute a command each time the power state is changed (ie: laptop power unplugged or plugged back in)
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# Pass your desired command to execute as arguments to this script
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# Example:
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# $ on-ac-power-state-change echo "My power state has changed!"
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# Written and tested with acpi version 1.7
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# Enjoy!
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# (Note: Use with caution; It will execute any parameters received verbatim)
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#
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COMMANDS_FOR_STATE_CHANGE="$@"
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CHECKED_AT_LEAST_ONCE="0"
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LAST_KNOWN_PLUGGED_IN_STATE=""
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CURRENT_PLUGGED_IN_STATE=""
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#
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do_log()
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{
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logger "[on-ac-power-state-change] $1"
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echo "[on-ac-power-state-change] $1"
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}
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do_complaint()
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{
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logger -s "[on-ac-power-state-change] $1"
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}
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do_die()
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{
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do_complaint "Fatal: $1"
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exit 1
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}
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#
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demand_acpi()
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{
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which acpi > /dev/null
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if [ $? -ne 0 ];then
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do_die "acpi doesn't seem to be installed"
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fi
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}
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#
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is_ac_connected()
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{
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# Grab output of acpi
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demand_acpi
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ACPI=$(acpi -a)
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#
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echo "$ACPI" | grep "on-line" > /dev/null
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if [ $? -eq 0 ];then
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#echo "Power seems to be plugged in"
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echo "1"
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fi
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echo "$ACPI" | grep "off-line" > /dev/null
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if [ $? -eq 0 ];then
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#echo "Power seems to be unplugged"
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echo "0"
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fi
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}
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#
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handle_acpi_state_change()
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{
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#
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CURRENT_PLUGGED_IN_STATE=$(is_ac_connected)
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#
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if [ "$CHECKED_AT_LEAST_ONCE" = "1" ];then
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if [ "$CURRENT_PLUGGED_IN_STATE" != "$LAST_KNOWN_PLUGGED_IN_STATE" ];then
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do_log "Power state has changed!"
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do_log "Executing commands: $COMMANDS_FOR_STATE_CHANGE"
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eval "$COMMANDS_FOR_STATE_CHANGE"
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fi
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else
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CHECKED_AT_LEAST_ONCE="1"
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fi
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#
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LAST_KNOWN_PLUGGED_IN_STATE="$CURRENT_PLUGGED_IN_STATE"
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}
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#
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main_loop()
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{
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#
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do_log "Begin main loop"
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while [ true ];do
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handle_acpi_state_change
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sleep 1
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done
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do_log "Done with main loop"
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}
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do_log "Begin"
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main_loop
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do_log "Exiting"
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