Test JS script file

Selected file: fs-sync.js
Compare console.log() outputs in browser and NodeJS.
Notice: Open browser's console in FireBUG!

  1. 05define_functions.js
  2. 10module_basic1.js
  3. 10module_basic2.js
  4. 10module_basic3.js
  5. 11module_nesting.js
  6. file.js
  7. fs-async.js
  8. fs-async2.js
  9. fs-async3.js
  10. fs-sync.js
  11. fs-sync2.js
  12. http.js
  13. index.html
  14. index.js
  15. my_modules
  16. net.js
  17. npm-debug.log
  18. package.json
  19. promises
  20. socket.js
  21. sys.js
  22. testfiles

..:: Source code - fs-sync.js ::..

/*
This example shows synchronous execution, blocking code.
console.log(contents); blocks process and that's why
console.log('Do something else!'); must wait

Max file that didn't crash nodeJS had 350MB
 */

//load modules
var fs = require('fs');

//synchronous file reading
var content = fs.readFileSync('./testfiles/largefile350mb.txt', 'utf8');
console.log(content);

//here process is blocked while file is not read completely. After that next console.log(); continue

console.log('Do something else!');

/*
Conclusion: Due to asynchronous execution, first is file dumped then appear 'Do something else'.
That's because console.log('Do something else!'); waits fs.readFileSync('largefile350mb.txt', 'utf8'); to be finished.
 */
 

..:: NodeJS Console - fs-sync.js ::..

$ node fs-sync.js 

		
		


		
		
$ps -aux | grep node (list all node processes)
sasa        1197  1.2  0.6 1325404 99468 ?       Ssl  Oct18 365:12 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1211  7.7  0.7 11865600 125064 ?     Ssl  Oct18 2209:15 node /home/sasa/dex8/dex8-api/starter.js
sasa        1218  0.4  0.5 11803120 83840 ?      Ssl  Oct18 126:56 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1219  0.7  0.6 11819568 103836 ?     Ssl  Oct18 224:20 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1232  0.4  0.5 11807420 90052 ?      Ssl  Oct18 131:44 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1248  0.6  0.5 1331640 83044 ?       Ssl  Oct18 183:57 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1274  0.3  0.4 1300180 68052 ?       Ssl  Oct18  89:31 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1277  0.3  0.4 1298544 65600 ?       Ssl  Oct18  88:07 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1335  0.4  0.7 11850208 127356 ?     Ssl  Oct18 130:48 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa        1337  0.6  0.7 1163564 117060 ?      Ssl  Oct18 191:57 node /home/sasa/voovuu/voovuu-api/starter.js
sasa        1385  3.5  3.8 12331304 631404 ?     Ssl  Oct18 997:33 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1387  0.3  0.4 11797452 80928 ?      Ssl  Oct18  97:27 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa        1457  0.3  0.3 1099360 62288 ?       Ssl  Oct18  89:44 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1458  0.3  0.4 22278316 77048 ?      Ssl  Oct18  91:25 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1514  0.3  0.3 1099748 63700 ?       Ssl  Oct18  89:26 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1515  0.3  0.3 1099620 63272 ?       Ssl  Oct18  89:11 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1593  0.3  0.3 1099616 63484 ?       Ssl  Oct18  89:41 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1595  0.3  0.3 1099616 64192 ?       Ssl  Oct18  89:26 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1660  0.3  0.3 1099760 63276 ?       Ssl  Oct18  89:15 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1661  0.3  0.3 1099360 63180 ?       Ssl  Oct18  89:18 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1732  0.3  0.3 1099360 62996 ?       Ssl  Oct18  89:24 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1734  0.3  0.3 1099360 63216 ?       Ssl  Oct18  89:04 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1792  0.6  4.0 12369500 657796 ?     Rsl  Oct18 182:42 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa      367378  0.6  0.5 1331820 85740 ?       Ssl  Oct21 154:21 node /home/sasa/miko/miko-hr/api/starter.js
sasa      367471  1.2  0.9 11862032 162528 ?     Ssl  Oct21 287:34 node /home/sasa/miko/miko-hr/server/index.js
www-data 2158078  0.0  0.0   2608   524 ?        S    06:42   0:00 sh -c ps -aux | grep node
www-data 2158080  0.0  0.0   3304   724 ?        S    06:42   0:00 grep node