..:: Source code - 01var_identifier.js ::..

/**
 * Variable identifier
 *  - can use any letter, digit, underscore (_) or dollar sign ($)
 *  - must start with _ , $ or letter
 *  - can't start with number
 */

//Good identifiers
var _name = 'John';
var firstName = 'Mary';
var $name = "Dollar";
var secondName2 = 'Smith';


//Bad identifiers
//var 5name = 'John'; //SyntaxError: identifier starts immediately after numeric literal
 

..:: NodeJS Console - 01var_identifier.js ::..

$ node 01var_identifier.js

		
		
$ps -aux | grep node (list all node processes)
sasa        1194  0.5  0.5 1303860 82792 ?       Ssl  Oct24 161:51 node /home/sasa/.pm2/modules/pm2-logrotate/node_modules/pm2-logr
sasa        1200  1.0  0.8 11722680 138316 ?     Ssl  Oct24 283:09 node /home/sasa/dex8/dex8-api/starter.js
sasa        1207  0.4  0.4 1304652 72816 ?       Ssl  Oct24 126:20 node /home/sasa/regoch/regoch-www/server
sasa        1208  0.4  0.4 1303888 71416 ?       Ssl  Oct24 115:44 node /home/sasa/dex8/dex8-panel/server/index.js
sasa        1224  1.0  0.6 11821924 98536 ?      Ssl  Oct24 291:25 node /home/sasa/dex8/dex8-www/server/index.js
sasa        1236  0.6  0.5 11812364 96632 ?      Ssl  Oct24 174:03 node /home/sasa/mikosoft_hr/www-mikosoft-hr/server/index.js
sasa        1255  0.8  0.5 1329104 82116 ?       Ssl  Oct24 225:29 node /home/sasa/mikosoft-info/api-mikosoft-info/starter.js
sasa        1257  0.4  0.4 1300548 69136 ?       Ssl  Oct24 117:23 node /home/sasa/mikosoft-info/www-mikosoft-info/server/index.js
sasa        1289  0.4  0.3 1296912 65232 ?       Ssl  Oct24 115:55 node /home/sasa/dex8/dex8-kiosk/server/index.js
sasa        1363  2.9  2.7 12145364 450856 ?     Ssl  Oct24 809:19 node /home/sasa/voovuu/voovuu-pub/server/index.js
sasa        1449  0.4  0.3 1165288 64240 ?       Ssl  Oct24 121:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1528  1.8  2.6 22621824 438952 ?     Ssl  Oct24 527:07 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1529  0.4  0.3 1099620 64040 ?       Ssl  Oct24 121:35 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1606  0.4  0.3 1098852 62260 ?       Ssl  Oct24 121:43 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1607  0.4  0.3 1099620 63720 ?       Ssl  Oct24 121:17 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1705  0.4  0.3 1099880 64760 ?       Ssl  Oct24 120:59 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1706  0.4  0.3 1099364 63640 ?       Ssl  Oct24 121:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1805  0.4  0.3 1100384 65224 ?       Ssl  Oct24 121:12 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1807  0.4  0.3 1100896 65028 ?       Ssl  Oct24 118:42 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1885  0.4  0.3 1100136 65080 ?       Ssl  Oct24 119:10 node /home/sasa/dex8/dex8-worker/starter.js
sasa        1886  1.4  0.8 11836812 136496 ?     Ssl  Oct24 394:11 node /home/sasa/mikosoft-info/crypto-mikosoft-info/server/index.
www-data    4892  0.0  0.0   2608   532 ?        S    23:25   0:00 sh -c ps -aux | grep node
www-data    4894  0.0  0.0   3304   712 ?        S    23:25   0:00 grep node
sasa     2628167  0.9  0.6 1157308 112408 ?      Ssl  Nov04 116:31 node /home/sasa/voovuu/voovuu-api/starter.js
sasa     3168557  0.7  0.5 11800228 90332 ?      Ssl  Nov06  70:16 node /home/sasa/mikosoft-info/dodo-mikosoft-info/server/index.js
sasa     3169051  0.5  0.5 11798152 82916 ?      Ssl  Nov06  48:46 node /home/sasa/@mikosoft/dodo-examples/server/index.js