Nam G VU namgivu

install nvm

ref. https://itnext.io/nvm-the-easiest-way-to-switch-node-js-environments-on-your-machine-in-a-flash-17babb7d5f1b ref. https://www.sitepoint.com/quick-tip-multiple-versions-node-nvm/

cd ~
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.36.0/install.sh | bash  # get latest version at https://github.com/nvm-sh/nvm#install--update-script

: reload your bash prompt

nvm --version # should print the version as a proof of successful installation

	import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUI
	import com.kms.katalon.core.webui.driver.DriverFactory

	import org.openqa.selenium.WebDriver
	import org.openqa.selenium.remote.RemoteWebDriver
	import com.kms.katalon.core.webui.driver.SmartWaitWebDriver
	import org.openqa.selenium.support.events.EventFiringWebDriver
	import org.openqa.selenium.chrome.ChromeDriver

	: YOUR_CMD \| awk '{print $1" "$2}'

	# ls 1st item
	ls \| awk '{print $1}' \| head -n1

	# sample on ls
	ls -lah \| awk '{print " chmod="$1 " chown="$3" "$4 " size="$5 }'

	syntax ref. https://unix.stackexchange.com/a/48104/17671
	```
	TZ=Asia/Singapore date '+%Y%m%d_%H%M%S_%N'
	```

	sample
	```bash
	$ TZ=Asia/Singapore date
	Tue Mar 10 12:43:28 +08 2020

	# ref. https://stackoverflow.com/a/59657648/248616
	echo 'QUIT' \| nc -w SECONDS YOUR_HOST PORT; echo $?
	# eg
	echo 'QUIT' \| nc -w 1 localhost 5432; echo $?

	increase swap file size to 8Gb
	ref. https://askubuntu.com/a/1075516/22308
	```bash
	sudo swapoff /swapfile ; _='# make all swap off';
	sudo rm -rf /swapfile ; _='# remove the current';

	_='# 16*1024Mb=16384Mb
	sudo dd if=/dev/zero of=/swapfile bs=1M count=16384 ; _='# set swapfile size to 16Gb';
	sudo dd if=/dev/zero of=/swapfile bs=1M count=8192 ; _='# set swapfile size to 8Gb';
	sudo dd if=/dev/zero of=/swapfile bs=1M count=4096 ; _='# set swapfile size to 4Gb';

	# bit.ly/nnbashtimestamp
	log_fielname_w_timestamp=log-`date +%Y%m%d_%H%M%S_%N`

	import unittest

	def setUpModule(): pass # nothing here for now
	def tearDownModule(): pass # nothing here for now


	class Test(unittest.TestCase):

	def setUp(self): pass # nothing here for now
	def tearDown(self): pass # nothing here for now