23 lines
737 B
Bash
Executable File
23 lines
737 B
Bash
Executable File
#! /bin/bash
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# small script to log battery usage in txt file for conky to parse
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# lovingly stolen from battery-stats by petter reinholdtsen
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DST_FILE="$XDG_CACHE_HOME/batmon.log"
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SYS_BAT_PATH="/sys/class/power_supply/BAT0"
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BAT_CAP_PATH="$SYS_BAT_PATH/charge_now"
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BAT_CAP_FULL_PATH="$SYS_BAT_PATH/charge_full"
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MAX_ENTRIES=1440 # number of minutes in day
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read_bat_percent() {
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timestamp=$(date +%s)
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charge_now=$(cat "$BAT_CAP_PATH")
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charge_full=$(cat "$BAT_CAP_FULL_PATH")
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percent=$(echo "100 * $charge_now / $charge_full" | bc)
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echo $timestamp $percent >> "$DST_FILE"
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}
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read_bat_percent
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# truncate to most recent entries by max_entries
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tail -n $MAX_ENTRIES "$DST_FILE" > /tmp/batmon.tmp.log && mv /tmp/batmon.tmp.log "$DST_FILE"
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