vev-bar-top-right RawHistoryFolder

1#!/bin/sh
2
3# Print a compact, single-line system summary for vev's top-right bar anchor.
4# When available, segments are ordered as CPU, memory, then clock.
5# Segments that cannot be read are omitted without producing stderr.
6
7now=$(date +%H:%M 2>/dev/null || true)
8
9cpu_pct=
10if [ -r /proc/stat ]; then
11	first=$(awk '$1 == "cpu" { idle = $5 + $6; total = 0; for (i = 2; i <= NF; i++) total += $i; print idle, total; exit }' /proc/stat 2>/dev/null || true)
12	sleep 0.1 2>/dev/null || true
13	second=$(awk '$1 == "cpu" { idle = $5 + $6; total = 0; for (i = 2; i <= NF; i++) total += $i; print idle, total; exit }' /proc/stat 2>/dev/null || true)
14	if [ -n "$first" ] && [ -n "$second" ]; then
15		cpu_pct=$(
16			awk -v first="$first" -v second="$second" '
17				BEGIN {
18					split(first, a, " ")
19					split(second, b, " ")
20					idle = b[1] - a[1]
21					total = b[2] - a[2]
22					if (total > 0) printf "%d", ((total - idle) * 100) / total
23				}
24			' 2>/dev/null || true
25		)
26	fi
27fi
28
29mem_pct=
30if [ -r /proc/meminfo ]; then
31	mem_pct=$(
32		awk '
33			$1 == "MemTotal:" { total = $2 }
34			$1 == "MemAvailable:" { available = $2 }
35			END {
36				if (total > 0 && available >= 0) printf "%d", ((total - available) * 100) / total
37			}
38		' /proc/meminfo 2>/dev/null || true
39	)
40fi
41
42line=
43if [ -n "$cpu_pct" ]; then
44	line="C $cpu_pct%"
45fi
46if [ -n "$mem_pct" ]; then
47	if [ -n "$line" ]; then
48		line="$line M $mem_pct%"
49	else
50		line="M $mem_pct%"
51	fi
52fi
53if [ -n "$now" ]; then
54	if [ -n "$line" ]; then
55		line="$line $now"
56	else
57		line="$now"
58	fi
59fi
60
61printf '%s\n' "$line"