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        1208  0.3  0.4 1309952 75536 ?       Ssl   2025 1595:39 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1236  0.5  0.6 11822388 99488 ?      Ssl   2025 2519:51 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1257  0.3  0.4 1308260 73400 ?       Ssl   2025 1614:58 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.3  0.4 1301856 69524 ?       Ssl   2025 1591:06 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  4.2  3.3 12267320 551956 ?     Ssl   2025 20385:29 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1886  7.6  4.2 12349736 691196 ?     Rsl   2025 36841:49 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
sasa     1214480  0.3  0.7 22311168 123676 ?     Ssl   2025 1398:21 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214483  0.3  0.3 1101568 63996 ?       Ssl   2025 1285:17 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214536  0.3  0.3 1100804 64608 ?       Ssl   2025 1283:34 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214544  0.3  0.3 1102568 65432 ?       Ssl   2025 1294:09 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214588  0.3  0.3 1102340 65508 ?       Ssl   2025 1287:37 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214617  0.3  0.4 1102208 65972 ?       Ssl   2025 1283:00 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214641  0.3  0.3 1166184 63640 ?       Ssl   2025 1274:31 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1214671  0.3  0.3 1100640 63152 ?       Ssl   2025 1268:22 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1215731  0.9  0.7 11847236 124812 ?     Ssl   2025 3503:48 node /home/sasa/dex8/dex8-api/starter.js
sasa     1216489  0.3  0.3 1101560 64256 ?       Ssl   2025 1283:37 node /home/sasa/dex8/dex8-worker/starter.js
sasa     1399960  0.8  0.6 11808484 111140 ?     Ssl  Apr20 1941:11 node /home/sasa/dex8/dex8-www/server/index.js
sasa     1631573  0.5  0.5 1304480 82000 ?       Ssl  May31 826:14 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa     1824679  0.4  0.5 11798848 85176 ?      Ssl  Aug15 250:34 node /home/sasa/kriptus/kriptus-panel/server/index.js
www-data 1834520  0.0  0.0   2608   588 ?        S    10:39   0:00 sh -c ps -aux | grep node
www-data 1834522  0.0  0.0   3304   644 ?        S    10:39   0:00 grep node
sasa     2448036  1.3  2.1 12052516 357400 ?     Ssl  Aug21 610:11 node /home/sasa/miko/miko-hr/server/index.js
sasa     2628167  0.7  0.7 1176284 130928 ?      Ssl   2025 3653:26 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     2663246  2.3  0.7 11874888 128412 ?     Ssl  Aug23 1011:42 node /home/sasa/kriptus/kriptus-api/starter.js
sasa     3168557  0.6  0.6 11828828 104772 ?     Ssl   2025 2828:40 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11799488 82888 ?      Ssl   2025 2330:22 node /home/sasa/@mikosoft/dodo-examples/server/index.js
sasa     3264954  0.6  0.5 1332864 85760 ?       Ssl  Feb21 2126:08 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa     3358795  0.6  0.5 1266136 87932 ?       Ssl  Aug29 220:43 node /home/sasa/miko/miko-hr/api/starter.js
sasa     3809381  0.3  0.5 11805476 94420 ?      Ssl  Sep02 100:44 node /home/sasa/dex8/dex8-worker/starter.js