32 lines
797 B
Plaintext
32 lines
797 B
Plaintext
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#!/bin/bash
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# try to load the sleep builtin dynamically, because otherwise there's
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# a *lot* of overhead (in terms of PID count)
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if [[ $(</proc/cmdline) = *"nixos-system"* ]]; then
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enable -f /run/current-system/sw/lib/bash/sleep sleep
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else
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enable -f /lib/bash/sleep sleep
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fi
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get_cmus_info () {
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if [ /dev/shm/status/cmus -nt /dev/shm/status/modified ]; then
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cmus_status=$(</dev/shm/status/cmus)
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touch /dev/shm/status/modified
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fi
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}
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while true; do
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# use /dev/shm to minimize the amount of i/o on disk
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if [ ! -d /dev/shm/status ]; then
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mkdir -p /dev/shm/status
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touch /dev/shm/status/modified
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fi
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battery=$(</sys/class/power_supply/BAT0/capacity)
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printf -v date '%(%H)T:%(%M)T' -1
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get_cmus_info
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printf "%s/%s/%s\n" "$cmus_status" "$date" "$battery"
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sleep 1
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done | dwm-setstatus
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