| 1 | #!/bin/env sh |
| 2 | |
| 3 | # INIT |
| 4 | printf "$$" > ~/.cache/pidofbar |
| 5 | sec=0 |
| 6 | |
| 7 | # MODULES |
| 8 | update_cpu () { |
| 9 | cpu=" $(grep -o "^[^ ]*" /proc/loadavg )" |
| 10 | } |
| 11 | |
| 12 | update_memory () { |
| 13 | memory=" $(free -h | sed -n "2s/\([^ ]* *\)\{2\}\([^ ]*\).*/\2/p")" |
| 14 | } |
| 15 | |
| 16 | update_time () { |
| 17 | time="$(date "+[ %a %d %b ] [ %I:%M %P ]")" |
| 18 | } |
| 19 | |
| 20 | update_weather () { |
| 21 | weather=" $(curl -s "wttr.in?format=1" | awk '{printf $2}')" |
| 22 | } |
| 23 | |
| 24 | # update_bat () { |
| 25 | # # you might need to change the path depending on your device |
| 26 | # read -r bat_status </sys/class/power_supply/BAT1/status |
| 27 | # read -r bat_capacity </sys/class/power_supply/BAT1/capacity |
| 28 | # bat="$bat_status $bat_capacity%" |
| 29 | # } |
| 30 | |
| 31 | update_vol () { |
| 32 | vol="$([ "$(pamixer --get-mute)" = "false" ] && printf ' ' || printf ' ')$(pamixer --get-volume)%" |
| 33 | } |
| 34 | |
| 35 | # For calcurse users, refer https://github.com/pystardust/automeet |
| 36 | #update_event () { |
| 37 | # event="$(calcurse -n | sed 1d | \ |
| 38 | # sed -E "s_^ *\[(.*):(.*)\] ([^\t]*)\t?.*_[\1h \2m->\3]_")" |
| 39 | # [ "[]" = "$event" ] && event="" |
| 40 | #} |
| 41 | |
| 42 | |
| 43 | # modules that don't update on their own need to be run at the start for getting their initial value |
| 44 | update_vol |
| 45 | |
| 46 | display () { |
| 47 | #printf "%s\n" " $event [$weather] [$memory $cpu] [$bat] [$backlight] [$vol] $time " |
| 48 | xsetroot -name " [ $weather ] [ $memory $cpu ] [ $vol ] $time " |
| 49 | } |
| 50 | |
| 51 | # SIGNALLING |
| 52 | # trap "<function>;display" "RTMIN+n" |
| 53 | trap "update_vol;display" "RTMIN" |
| 54 | # trap "update_bat;display" "RTMIN+2" |
| 55 | # to update it from external commands |
| 56 | ## kill -m "$(cat ~/.cache/pidofbar)" |
| 57 | # where m = 34 + n |
| 58 | |
| 59 | while true |
| 60 | do |
| 61 | sleep 1 & wait && { |
| 62 | # to update item ever n seconds with a offset of m |
| 63 | ## [ $((sec % n)) -eq m ] && udpate_item |
| 64 | [ $((sec % 5 )) -eq 0 ] && update_time # update time every 5 seconds |
| 65 | [ $((sec % 5)) -eq 0 ] && update_cpu # update cpu every 15 seconds |
| 66 | [ $((sec % 15)) -eq 0 ] && update_memory |
| 67 | # [ $((sec % 60)) -eq 0 ] && update_bat |
| 68 | [ $((sec % 3600)) -eq 2 ] && update_weather |
| 69 | #[ $((sec % 300)) -eq 1 ] && update_event |
| 70 | |
| 71 | # how often the display updates ( 5 seconds ) |
| 72 | [ $((sec % 5 )) -eq 0 ] && display |
| 73 | sec=$((sec + 1)) |
| 74 | } |
| 75 | done |
| 76 | |
| 77 | |