servius/src/system.js

Servius is a comprehensive npm package for server monitoring,providing tracking of CPU load, free memory, disk usage, process count, and other important system resources. It also offers details on CPU, server uptime, last boot time, OS, disk partitions,pr

const shelljs = require("shelljs")

//System Start
const uptime = () => {
    let time = shelljs.exec('cat /proc/uptime', {silent: true}).stdout.trim()
    time = time.split(' ')[0]
    return formatTime(time)
}

const getOS = () => {
    const osd = {}
    let details = shelljs.exec('cat /etc/*release', {silent: true}).stdout.trim()
    details = details.split('\n')
    details.forEach(line => {
        const [key, value] = line.split('=')
        switch (key) {
          case 'DISTRIB_ID':
            osd.distributor = value
            break
          case 'PRETTY_NAME':
            osd.pretty_name = value.replace(/"/g, '').trim()
            break
          case 'DISTRIB_RELEASE':
            osd.version = value
            break
          case 'DISTRIB_CODENAME':
            osd.codename = value.trim()
            break
        }
      })
      return JSON.parse(JSON.stringify({distributor: osd.distributor, name: osd.pretty_name, version: osd.version, codename: osd.codename }))
}

const bootTime = (raw) => {
    raw = raw || false
    let time = raw ? shelljs.exec("cat /proc/stat | grep btime | awk '{print $2}'", {silent: true}).stdout.trim(): new Date(parseInt(shelljs.exec("cat /proc/stat | grep btime | awk '{print $2}'", {silent: true}).stdout.trim()) * 1000)
    return time
}

const getUsers = () => {
    let users = shelljs.exec('who | awk \'{print $1,$2,$3,$4,$5}\'', {silent: true}).stdout.trim()
    let each = users.split('\n')
    let user = []
    each.forEach(element => {
        let [name, tty, date, time, host] = element.split(' ')
        host = host.replace('(', ' ').trim()
        host = host.replace(')', ' ').trim()
        user.push({name,tty,date,time,host})
    })
    return user
}

//System End

module.exports = {getUsers, bootTime, getOS, uptime}

// Handlers
const formatTime = (seconds) => {
    let years = Math.floor(seconds / 31536000)
    seconds %= 31536000
    let months = Math.floor(seconds / 2592000)
    seconds %= 2592000
    let weeks = Math.floor(seconds / 604800)
    seconds %= 604800
    let days = Math.floor(seconds / 86400)
    seconds %= 86400
    let hours = Math.floor(seconds / 3600)
    seconds %= 3600
    let minutes = Math.floor(seconds / 60)
    seconds %= 60
  
    let result = ""
    if (years > 0) result += `${years} year${years > 1 ? 's' : ''}, `
    if (months > 0) result += `${months} month${months > 1 ? 's' : ''}, `
    if (weeks > 0) result += `${weeks} week${weeks > 1 ? 's' : ''}, `
    if (days > 0) result += `${days} day${days > 1 ? 's' : ''}, `
    if (hours > 0) result += `${hours} hour${hours > 1 ? 's' : ''}, `
    if (minutes > 0) result += `${minutes} minute${minutes > 1 ? 's' : ''}, `
    
    return result.slice(0, -2)
}