94 lines
3.9 KiB
Bash
Executable File
94 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# metrics.sh full|compact — the status-right system segment in ONE process per refresh.
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# (tmux used to spawn net dl, net ul, cpu, mem and temp as five separate #() jobs per tick.)
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# Prints #[fg=…] style markers, which tmux honours inside #() output.
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# full : net dl · net ul · cpu · mem · temp (temp vanishes when no sensor exists)
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# compact : cpu · mem
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# CPU and net are averaged over the interval since the PREVIOUS refresh: the /proc totals
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# persist in $XDG_RUNTIME_DIR state files, so no sleeps and the value covers the whole
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# status-interval. First run (no state yet) shows the since-boot average. Glyphs are Waybar's:
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# cpu U+F035B, memory U+F0F86, thermometer U+F050F, download U+F019, upload U+F093.
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mode=${1:-full}
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rt="${XDG_RUNTIME_DIR:-/tmp}"
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cpu() { # utilisation % since the previous refresh
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local st="$rt/tmux_cpu_stat" u n s i w rest idle tot v p_tot=0 p_idle=0 dt di
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read -r _ u n s i w rest </proc/stat
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idle=$((i + w))
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tot=$((u + n + s + i + w))
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for v in $rest; do tot=$((tot + v)); done
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[ -r "$st" ] && read -r p_tot p_idle <"$st"
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[ "$p_tot" -gt "$tot" ] && { p_tot=0; p_idle=0; } # stale state from a previous boot
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printf '%s %s\n' "$tot" "$idle" >"$st"
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dt=$((tot - p_tot))
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di=$((idle - p_idle))
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printf '\U000f035b '
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if [ "$dt" -le 0 ]; then printf -- '--%%'; else printf '%d%%' $(((100 * (dt - di) + dt / 2) / dt)); fi
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}
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mem() { # used = MemTotal - MemAvailable
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printf '\U000f0f86 '
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awk '/^MemTotal:/{t=$2} /^MemAvailable:/{a=$2} END{if(t>0)printf "%d%%",(t-a)*100/t; else printf "--%%"}' /proc/meminfo
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}
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temp() { # CPU °C: a CPU-ish thermal zone, else a CPU hwmon chip, else the hottest zone; nothing if none
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local cpu_zone="" any_zone="" hw="" d t ty f
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for d in /sys/class/thermal/thermal_zone*/; do
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[ -r "${d}temp" ] && [ -r "${d}type" ] || continue
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t=$(<"${d}temp")
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case $t in '' | *[!0-9]*) continue ;; esac
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ty=$(<"${d}type"); ty=${ty,,}
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case $ty in *x86_pkg_temp* | *coretemp* | *k10temp* | *tctl* | *cpu*)
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if [ -z "$cpu_zone" ] || [ "$t" -gt "$cpu_zone" ]; then cpu_zone=$t; fi ;;
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esac
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if [ -z "$any_zone" ] || [ "$t" -gt "$any_zone" ]; then any_zone=$t; fi
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done
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if [ -z "$cpu_zone" ]; then
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for d in /sys/class/hwmon/hwmon*/; do
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[ -r "${d}name" ] || continue
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case $(<"${d}name") in coretemp | k10temp | zenpower | cpu_thermal)
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for f in "${d}"temp*_input; do
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[ -r "$f" ] || continue
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t=$(<"$f")
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case $t in '' | *[!0-9]*) continue ;; esac
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if [ -z "$hw" ] || [ "$t" -gt "$hw" ]; then hw=$t; fi
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done ;;
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esac
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done
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fi
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t=${cpu_zone:-${hw:-$any_zone}}
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[ -n "$t" ] || return 0
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printf '\U000f050f %d° ' $(((t + 500) / 1000))
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}
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human() { awk -v b="$1" 'BEGIN{ split("B K M G T", u, " "); i=1;
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while (b >= 1024 && i < 5) { b /= 1024; i++ }
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if (i == 1) printf "%d%s", b, u[i]; else printf "%.1f%s", b, u[i] }'; }
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net() { # sets dl/ul: bytes per second over all non-lo interfaces since the previous refresh
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local ctr="$rt/tmux_net_ctr" now rx tx prx ptx pnow drx=0 dtx=0 dt=1
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now=$(date +%s.%N)
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read -r rx tx < <(awk 'NR>2{gsub(/:/," "); if($1!="lo"){r+=$2; t+=$10}} END{print r+0, t+0}' /proc/net/dev)
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if [ -r "$ctr" ]; then
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read -r prx ptx pnow <"$ctr"
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dt=$(awk -v a="$now" -v b="$pnow" 'BEGIN{d=a-b; print (d>0.05)?d:1}')
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drx=$((rx - prx)); dtx=$((tx - ptx))
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[ "$drx" -lt 0 ] && drx=0
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[ "$dtx" -lt 0 ] && dtx=0
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fi
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printf '%s %s %s\n' "$rx" "$tx" "$now" >"$ctr"
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dl=$(human "$(awk -v x="$drx" -v d="$dt" 'BEGIN{printf "%d", x/d}')")
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ul=$(human "$(awk -v x="$dtx" -v d="$dt" 'BEGIN{printf "%d", x/d}')")
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}
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case $mode in
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compact)
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printf '#[fg=#89b4fa]%s #[fg=#94e2d5]%s' "$(cpu)" "$(mem)"
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;;
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*)
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net
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printf '#[fg=#a6e3a1]\U0000f019 %s #[fg=#f9e2af]\U0000f093 %s #[fg=#89b4fa]%s #[fg=#94e2d5]%s #[fg=#fab387]%s' \
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"$dl" "$ul" "$(cpu)" "$(mem)" "$(temp)"
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;;
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esac
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