mirror of
https://github.com/leitbogioro/Tools.git
synced 2026-01-07 01:54:32 +08:00
Refactor the code, show "CPU Usage".
This commit is contained in:
Molly Lau
GitHub
parent
5ac5d55fb4
commit
a7f9eb812c
1 changed files with 261 additions and 54 deletions
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@ -1,4 +1,4 @@
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#!/bin/bash
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#!/usr/bin/env bash
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#
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# 10-sysinfo - generate the system information
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# Copyright (c) 2013 Nick Charlton
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@ -22,71 +22,278 @@
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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date=$(date)
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load=$(cat /proc/loadavg | awk '{print $1}')
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root_usage=$(df -h / | awk '/\// {print $(NF-1)}')
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memory_usage=$(free -m | awk '/Mem:/ { total=$2; used=$3 } END { printf("%3.1f%%", used/total*100)}')
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set -o pipefail
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[[ $(free -m | awk '/Swap/ {print $2}') == "0" ]] && swap_usage="0.0%" || swap_usage=$(free -m | awk '/Swap/ { printf("%3.1f%%", $3/$2*100) }')
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usersnum=$(expr $(users | wc -w) + 1)
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time=$(uptime | grep -ohe 'up .*' | sed 's/,/\ hours/g' | awk '{ printf $2" "$3 }')
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processes=$(ps aux | wc -l)
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localip=$(hostname -I | awk '{print $1}')
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have_cmd() { command -v "$1" >/dev/null 2>&1; }
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IPv4=$(timeout 1s dig -4 TXT +short o-o.myaddr.l.google.com @ns3.google.com | sed 's/\"//g')
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[[ "$IPv4" == "" ]] && IPv4=$(timeout 1s dig -4 TXT CH +short whoami.cloudflare @1.0.0.3 | sed 's/\"//g')
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IPv6=$(timeout 1s dig -6 TXT +short o-o.myaddr.l.google.com @ns3.google.com | sed 's/\"//g')
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[[ "$IPv6" == "" ]] && IPv6=$(timeout 1s dig -6 TXT CH +short whoami.cloudflare @2606:4700:4700::1003 | sed 's/\"//g')
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# IP_Check=$(echo $IPv4 | awk -F. '$1<255&&$2<255&&$3<255&&$4<255{print "isIPv4"}')
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IP_Check="$IPv4"
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if expr "$IP_Check" : '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
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for i in 1 2 3 4; do
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if [ $(echo "$IP_Check" | cut -d. -f$i) -gt 255 ]; then
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echo "fail ($IP_Check)"
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exit 1
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fi
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done
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IP_Check="isIPv4"
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run_timeout() {
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local t="$1"; shift
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if have_cmd timeout; then
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timeout "$t" "$@" 2>/dev/null
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else
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"$@" 2>/dev/null
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fi
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}
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get_load() { awk '{print $1}' /proc/loadavg 2>/dev/null || echo "0.00"; }
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get_root_usage() { df -h / 2>/dev/null | awk 'NR==2{print $5}' | head -n 1; }
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# CPU usage: sample /proc/stat twice, output integer percent like "8%"
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get_cpu_usage() {
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local cpu user nice system idle iowait irq softirq steal guest guest_nice
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local cpu2 user2 nice2 system2 idle2 iowait2 irq2 softirq2 steal2 guest2 guest_nice2
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local idle_all1 idle_all2 total1 total2 dt di
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read -r cpu user nice system idle iowait irq softirq steal guest guest_nice < /proc/stat 2>/dev/null || { echo "N/A"; return 0; }
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idle_all1=$((idle + iowait))
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total1=$((user + nice + system + idle + iowait + irq + softirq + steal))
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sleep 0.2
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read -r cpu2 user2 nice2 system2 idle2 iowait2 irq2 softirq2 steal2 guest2 guest_nice2 < /proc/stat 2>/dev/null || { echo "N/A"; return 0; }
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idle_all2=$((idle2 + iowait2))
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total2=$((user2 + nice2 + system2 + idle2 + iowait2 + irq2 + softirq2 + steal2))
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dt=$((total2 - total1))
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di=$((idle_all2 - idle_all1))
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if (( dt <= 0 )); then
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echo "N/A"
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return 0
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fi
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# integer percent
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awk -v dt="$dt" -v di="$di" 'BEGIN{printf "%d%%", ((dt-di)*100)/dt}'
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}
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get_mem_usage() {
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local total avail used
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total="$(awk '/^MemTotal:/{print $2; exit}' /proc/meminfo 2>/dev/null)"
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avail="$(awk '/^MemAvailable:/{print $2; exit}' /proc/meminfo 2>/dev/null)"
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if [[ -n "$total" && -n "$avail" && "$total" =~ ^[0-9]+$ && "$avail" =~ ^[0-9]+$ && "$total" -gt 0 ]]; then
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used=$((total - avail))
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awk -v u="$used" -v t="$total" 'BEGIN{printf "%.1f%%", (u/t)*100}'
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return 0
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fi
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if have_cmd free; then
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free -m 2>/dev/null | awk '/Mem:/ { total=$2; used=$3 } END { if(total>0) printf("%.1f%%", used/total*100); else print "N/A"}'
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else
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echo "N/A"
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fi
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}
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get_swap_usage() {
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local st sf su
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st="$(awk '/^SwapTotal:/{print $2; exit}' /proc/meminfo 2>/dev/null)"
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sf="$(awk '/^SwapFree:/{print $2; exit}' /proc/meminfo 2>/dev/null)"
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if [[ -n "$st" && "$st" =~ ^[0-9]+$ && "$st" -gt 0 ]]; then
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su=$((st - sf))
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awk -v u="$su" -v t="$st" 'BEGIN{printf "%.1f%%", (u/t)*100}'
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else
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echo "0.0%"
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fi
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}
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get_uptime_str() {
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local uptime_s days hrs mins
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uptime_s="$(cut -d. -f1 /proc/uptime 2>/dev/null)"
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if [[ -z "$uptime_s" || ! "$uptime_s" =~ ^[0-9]+$ ]]; then
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echo "N/A"
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return 0
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fi
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days=$((uptime_s / 86400))
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hrs=$(((uptime_s % 86400) / 3600))
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mins=$(((uptime_s % 3600) / 60))
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if ((days > 0)); then
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echo "${days} days ${hrs} hours"
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elif ((hrs > 0)); then
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echo "${hrs} hours ${mins} min"
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else
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echo "${mins} min"
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fi
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}
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get_local_ipv4() {
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local ip=""
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if have_cmd ip; then
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ip="$(ip -4 route get 1.1.1.1 2>/dev/null | awk '{for(i=1;i<=NF;i++) if($i=="src"){print $(i+1); exit}}')"
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[[ -z "$ip" ]] && ip="$(ip -4 addr show scope global 2>/dev/null | awk '/inet /{print $2; exit}' | cut -d/ -f1)"
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fi
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[[ -z "$ip" ]] && ip="$(hostname -I 2>/dev/null | awk '{print $1}')"
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echo "$ip"
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}
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validate_ipv4() {
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local ip="$1"
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[[ -z "$ip" ]] && return 1
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echo "$ip" | awk -F. '
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NF==4{
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for(i=1;i<=4;i++){
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if($i !~ /^[0-9]+$/) exit 1
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if($i<0 || $i>255) exit 1
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}
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exit 0
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}
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{ exit 1 }
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' >/dev/null 2>&1
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}
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normalize_ipv6() {
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local ip="$1"
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[[ -z "$ip" ]] && { echo ""; return 0; }
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[[ "$ip" == :* ]] && ip="0$ip"
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[[ "$ip" == *: ]] && ip="${ip}0"
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echo "$ip"
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}
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validate_ipv6() {
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local ip="$1"
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[[ -z "$ip" ]] && return 1
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echo "$ip" | awk '
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{
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s=$0
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if (index(s,":")==0) exit 1
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if (s ~ /[^0-9A-Fa-f:]/) exit 1
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if (s ~ /:::/) exit 1
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tmp=s
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n=gsub(/::/, "&", tmp)
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if (n>1) exit 1
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split(s, a, ":")
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hext=0
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for(i=1;i<=length(a);i++){
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if (a[i]!=""){
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if (length(a[i])>4) exit 1
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if (a[i] ~ /[^0-9A-Fa-f]/) exit 1
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hext++
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}
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}
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if (n==0){
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if (length(a)!=8) exit 1
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} else {
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if (hext>8) exit 1
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}
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exit 0
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}
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' >/dev/null 2>&1
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}
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query_public_ip() {
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local family="$1" ip=""
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if have_cmd dig; then
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if [[ "$family" == "4" ]]; then
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ip="$(run_timeout 1s dig -4 TXT +short o-o.myaddr.l.google.com @ns3.google.com | head -n 1 | tr -d '"')"
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[[ -z "$ip" ]] && ip="$(run_timeout 1s dig -4 TXT CH +short whoami.cloudflare @1.0.0.3 | head -n 1 | tr -d '"')"
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else
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ip="$(run_timeout 1s dig -6 TXT +short o-o.myaddr.l.google.com @ns3.google.com | head -n 1 | tr -d '"')"
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[[ -z "$ip" ]] && ip="$(run_timeout 1s dig -6 TXT CH +short whoami.cloudflare @2606:4700:4700::1003 | head -n 1 | tr -d '"')"
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fi
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fi
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if [[ -z "$ip" ]] && have_cmd curl; then
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if [[ "$family" == "4" ]]; then
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ip="$(run_timeout 2s curl -4 -fsS https://api.ipify.org | head -n 1)"
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else
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ip="$(run_timeout 2s curl -6 -fsS https://api64.ipify.org | head -n 1)"
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fi
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fi
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if [[ -z "$ip" ]] && have_cmd wget; then
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if [[ "$family" == "4" ]]; then
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ip="$(run_timeout 2s wget -T 2 -qO- https://api.ipify.org | head -n 1)"
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else
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ip="$(run_timeout 2s wget -T 2 -qO- https://api64.ipify.org | head -n 1)"
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fi
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fi
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echo "$ip"
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}
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# Public IP cache TTL sweet spot: 300s
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get_public_ips_cached() {
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local cache="/run/motd-ip.cache"
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local ttl=300
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local now mtime age
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now="$(date +%s 2>/dev/null || echo 0)"
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if [[ -f "$cache" ]] && have_cmd stat && [[ "$now" =~ ^[0-9]+$ ]]; then
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mtime="$(stat -c %Y "$cache" 2>/dev/null || echo 0)"
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if [[ "$mtime" =~ ^[0-9]+$ ]]; then
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age=$((now - mtime))
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if (( age >= 0 && age < ttl )); then
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# shellcheck disable=SC1090
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. "$cache"
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echo "${IPv4:-N/A}|${IPv6:-N/A}"
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return 0
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fi
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fi
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fi
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local v4 v6
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v4="$(query_public_ip 4)"
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v6="$(query_public_ip 6)"
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v6="$(normalize_ipv6 "$v6")"
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if validate_ipv4 "$v4"; then IPv4="$v4"; else IPv4="N/A"; fi
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if validate_ipv6 "$v6"; then IPv6="$v6"; else IPv6="N/A"; fi
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{ printf 'IPv4=%q\n' "$IPv4"; printf 'IPv6=%q\n' "$IPv6"; } >"$cache" 2>/dev/null || true
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echo "${IPv4}|${IPv6}"
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}
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get_usersnum() {
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if have_cmd ss; then
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ss -tnp 2>/dev/null | awk '/sshd/ && /ESTAB/{c++} END{print c+0}'
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return 0
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fi
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if have_cmd netstat; then
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netstat -tnp 2>/dev/null | awk '/sshd/ && /ESTABLISHED/{c++} END{print c+0}'
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return 0
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fi
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who 2>/dev/null | wc -l
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}
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# ---------- collect ----------
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date_str="$(date)"
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load="$(get_load)"
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root_usage="$(get_root_usage)"
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cpu_usage="$(get_cpu_usage)"
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memory_usage="$(get_mem_usage)"
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swap_usage="$(get_swap_usage)"
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usersnum="$(get_usersnum)"
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time_str="$(get_uptime_str)"
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processes="$(ps aux 2>/dev/null | wc -l)"
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localip="$(get_local_ipv4)"
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ip_pair="$(get_public_ips_cached)"
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IPv4="${ip_pair%%|*}"
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IPv6="${ip_pair#*|}"
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if [[ -z "$localip" || "$localip" == "$IPv4" || "$localip" == "$IPv6" || "$localip" == *:* ]]; then
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localip="$(awk '/localhost/{print $1; exit}' /etc/hosts 2>/dev/null)"
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fi
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[[ -z "$localip" ]] && localip="127.0.0.1"
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[[ ${IPv6: -1} == ":" ]] && IPv6=$(echo "$IPv6" | sed 's/.$/0/')
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[[ ${IPv6:0:1} == ":" ]] && IPv6=$(echo "$IPv6" | sed 's/^./0/')
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IP6_Check="$IPv6"":"
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IP6_Hex_Num=$(echo "$IP6_Check" | tr -cd ":" | wc -c)
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IP6_Hex_Abbr="0"
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if [[ $(echo "$IPv6" | grep -i '[[:xdigit:]]' | grep ':') ]] && [[ "$IP6_Hex_Num" -le "8" ]]; then
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for ((i = 1; i <= "$IP6_Hex_Num"; i++)); do
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IP6_Hex=$(echo "$IP6_Check" | cut -d: -f$i)
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[[ "$IP6_Hex" == "" ]] && IP6_Hex_Abbr=$(expr $IP6_Hex_Abbr + 1)
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[[ $(echo "$IP6_Hex" | wc -c) -le "4" ]] && {
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if [[ $(echo "$IP6_Hex" | grep -iE '[^0-9a-f]') ]] || [[ "$IP6_Hex_Abbr" -gt "1" ]]; then
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echo "fail ($IP6_Check)"
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exit 1
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fi
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}
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done
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IP6_Check="isIPv6"
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fi
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[[ "${IP6_Check}" != "isIPv6" ]] && IPv6="N/A"
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[[ "${IP_Check}" != "isIPv4" ]] && IPv4="N/A"
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if [[ "${localip}" == "${IPv4}" ]] || [[ "${localip}" == "${IPv6}" ]] || [[ -z "${localip}" ]]; then
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# localip=`ip -o a show | grep -w "lo" | grep -w "inet" | cut -d ' ' -f7 | awk '{split($1, a, "/"); print $2 "" a[1]}'`
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localip=$(cat /etc/hosts | grep "localhost" | sed -n 1p | awk '{print $1}')
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fi
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echo " System information as of $date"
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# ---------- output ----------
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echo " System information as of $date_str"
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echo
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printf "%-30s%-15s\n" " System Load:" "$load"
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printf "%-30s%-15s\n" " Private IP Address:" "$localip"
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printf "%-30s%-15s\n" " Public IPv4 Address:" "$IPv4"
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printf "%-30s%-15s\n" " Public IPv6 Address:" "$IPv6"
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printf "%-30s%-15s\n" " CPU Usage:" "$cpu_usage"
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printf "%-30s%-15s\n" " Memory Usage:" "$memory_usage"
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printf "%-30s%-15s\n" " Usage On /:" "$root_usage"
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printf "%-30s%-15s\n" " Swap Usage:" "$swap_usage"
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printf "%-30s%-15s\n" " Users Logged In:" "$usersnum"
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printf "%-30s%-15s\n" " Processes:" "$processes"
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printf "%-30s%-15s\n" " System Uptime:" "$time"
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printf "%-30s%-15s\n" " System Uptime:" "$time_str"
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echo
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Reference in a new issue