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poweroffat80percent.sh - wait for laptop battery to drain to 80% then power off. save battery lifetime.
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| #!/bin/sh -eu | |
| while true | |
| do | |
| sudo whoami > /dev/null | |
| BATT_PERCENT=$(cat /sys/class/power_supply/BAT0/capacity) | |
| if [ "$BATT_PERCENT" -le "80" ]; then | |
| echo "battery ${BATT_PERCENT}%. powering off now." | |
| break | |
| else | |
| echo "battery ${BATT_PERCENT}%. waiting till < 80%" | |
| fi | |
| sleep 30s | |
| done | |
| /usr/bin/poweroff | |
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