add sysinfo cmd and dataConversion func

src/commands/sysinfo.ts

@@ -0,0 +1,34 @@
+import moment from 'moment';
+import { Message } from 'eris';
+import os, { totalmem } from 'os';
+import { Command, RichEmbed } from '../class';
+import { dataConversion } from '../functions';
+import { Client } from '..';
+
+export default class SysInfo extends Command {
+  constructor(client: Client) {
+    super(client);
+    this.name = 'sysinfo';
+    this.description = 'Provides system information.';
+    this.enabled = true;
+  }
+
+  public async run(message: Message) {
+    const availableMemory: string = await this.client.util.exec('free -b');
+    const usedMemory = dataConversion(totalmem() - Number(availableMemory.split('\n')[1].split(' ').slice(-1)[0]));
+    const date = new Date();
+    date.setMilliseconds(-(moment.duration(os.uptime(), 's').asMilliseconds()));
+
+    const embed = new RichEmbed();
+    embed.setTitle('System Information & Statistics');
+    embed.addField('Hostname', os.hostname(), true);
+    embed.addField('Uptime', `${moment.duration(os.uptime(), 's').humanize()} | Last restart was on ${moment(date).format('dddd, MMMM Do YYYY, h:mm:ss A')} EST`, true);
+    embed.addField('CPU', `${os.cpus()[0].model} ${os.cpus()[0].speed / 1000}GHz | ${os.cpus().length} Cores | ${os.arch()}`, true);
+    embed.addField('Load Average (last 15 minutes)', os.loadavg()[2].toFixed(3), true);
+    embed.addField('Memory/RAM', `${usedMemory} / ${dataConversion(totalmem())}`, true);
+    embed.addField('Network Interfaces (IPv4)', os.networkInterfaces().eth0.filter((r) => r.family === 'IPv4')[0].address, true);
+    embed.addField('Network Interfaces (IPv6)', os.networkInterfaces().eth0.filter((r) => r.family === 'IPv6')[0].address, true);
+    // @ts-ignore
+    message.channel.createMessage({ embed });
+  }
+}

src/functions/dataConversion.ts

@@ -0,0 +1,5 @@
+export default function dataConversion(bytes: number) {
+  const i = Math.floor(Math.log(bytes) / Math.log(1024));
+  const sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
+  return `${(bytes / 1024 ** i).toFixed(2)} ${sizes[i]}`;
+}