Add systemd service/timer

server-pages.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Update server page statuses
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/sh -c 'node /home/kevin/server-pages/server-status.js > /home/kevin/my-site/public/server-apps.json'
+User=kevin
+Group=kevin
+Environment=PATH=/usr/bin:/usr/local/bin
+Environment=NODE_ENV=production
+WorkingDirectory=/home/kevin/server-pages
+
+[Install]
+WantedBy=multi-user.target

server-pages.timer

@@ -0,0 +1,9 @@
+[Unit]
+Description=Update server page statuses
+
+[Timer]
+OnCalendar=*:0
+Persistent=true
+
+[Install]
+WantedBy=timers.target

server-status.js

@@ -2,19 +2,17 @@ const urlMetadata = require('url-metadata')
 const csv = require('csvtojson')
 const log = console.log
 const { spawnSync } = require( 'child_process' ),
-	// uptime = spawnSync( 'uptime', [ '-p' ] )
 	uptime = spawnSync( 'uptime', [ '-s' ] )
 
 const csvFilePath = 'server-pages.csv'
 // const csvFilePath = 'server-pages-test.csv'
 
+// consider webpage to be up if stored title matches fetched title
 const checkIfTitleMatches = obj => {
   return urlMetadata(obj['url']).then(metadata => { // success handler
       if (metadata.title == obj['siteTitle']) {
-        // log(obj['shortUrl'])
         obj['status'] = 'up'
       } else {
-        // console.log(metadata)
         obj['status'] = 'down'
       }
       return true
@@ -24,6 +22,7 @@ const checkIfTitleMatches = obj => {
     })
 }
 
+// update all sites' status in JSON
 const updateSiteStatus = json => { 
   const promiseArray = []
   json.forEach(async function (obj) {
@@ -37,6 +36,7 @@ const updateSiteStatus = json => {
 }
 
 csv().fromFile(csvFilePath).then(async function (json) {
+  // finish updating all sites' status before outputting JSON
   Promise.all(updateSiteStatus(json)).then(results => {
     const statusJson = {
       "sites": json,