fredjoseph

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I hereby claim:

I am fredjoseph on github.
I am fredjoseph (https://keybase.io/fredjoseph) on keybase.
I have a public key ASAUP31ohpKOKZXGMac1INGln02a5em4A0N8DoSiJdKaIQo

To claim this, I am signing this object:

Docker is an open platform for developing, shipping, and running applications. It is the standard de facto for packaging and sharing apps – from desktop to the cloud.

To achieve its goal, Docker is using containers.

The container has the following characteristics:

A container is a package for the software and all required libraries.
As soon as is launched, a container determines a runtime environment for your application.
A container is lighter than a virtual machine, so that it can be launched way faster.
A container is distributed in the form of an image, which consists of multiple layers. Multiple containers can reuse these layers.

OpenVPN, by default, installs only one TAP network interface. If you want to connect to multiple VPNs simultaneously you need a TAP interface for each VPN.

Add an additional TAP adapter

Open a command prompr with administrative rights
Go to the TAP install folder C:\Program Files\TAP-Windows\bin

Launch the addtap.bat script, the result will be :

"devcon.exe" install "C:\Program Files\TAP-Windows\driver\OemWin2k.inf" tap0901

Device node created. Install is complete when drivers are installed...

In-memory database

For connecting to in-memory HSQL database, we need to launch a db browser in the same JVM instance.

First, we need to add the following code in a Configuration class of the Spring application.

    @PostConstruct
    public void startDBManager() {
        //hsqldb
        DatabaseManagerSwing.main(new String[] { "--url", "jdbc:hsqldb:mem:testdb", "--user", "sa", "--password", "" });
 }

Error

If an error 'initialize': negative string size (or size too big) occurs, the solution is to remove the index file in ~\.vagrant.d\data\machine-index

Disk size

Vagrant doesn’t provide any out-of-the-box option to configure or to change the disk size. The disk size of a VM totally depends on the base image used for the VM. Moreover, most Vagrant boxes use VMDK disks which cannot be resized!

vagrant-disksize plugin

This plugin allows to resize the disk size.

Clink Commands	Description
`Ctrl`+`V`	Paste from clipboard
`Ctrl`+`R`	Incremental history search
`Ctrl`+`S`	Incremental history search
`Tab`	completion
`Ctrl`+`Z`	Undo
`Ctrl`+`Alt`+`U`	Change directory (automatic “cd ..”)
`Ctrl`+`Alt`+`E`	Expand environment variable
Alt+H	GNU Readline help

The goal is to display the status of a git repository directly in the prompt.

Solution 1

Update the .bashrc file with the following lines

export GIT_PS1_SHOWDIRTYSTATE=1
export GIT_PS1_SHOWUNTRACKEDFILES=1
export GIT_PS1_SHOWUPSTREAM="auto verbose"
export GIT_PS1_SHOWCOLORHINTS=1

	# This configuration file adds some commands to lf file manager for windows.
	# Requirements :
	# - git-for-windows
	# - highlight

	# interpreter for shell commands (needs to be POSIX compatible)
	set shell cmd

	# set '-eu' options for shell commands
	# These options are used to have safer shell commands. Option '-e' is used to

	;= @echo off
	;= rem Call DOSKEY and use this file as the macrofile
	;= %SystemRoot%\system32\doskey /listsize=1000 /macrofile=%0%
	;= rem In batch mode, jump to the end of the file
	;= goto:eof
	;= Add aliases below here
	e.=explorer .
	ls=ls --show-control-chars -F --color $*
	pwd=cd
	clear=cls

	alias ls="ls --color=auto -v -h --group-directories-first"
	unalias fd 2>/dev/null

	alias mvn-quick-install="mvn clean install -DskipTests -T2C"
	alias iless="less -iMSx4 -FXR"

	# Kill all the tabs in Chrome to free up memory
	# [C] explained: http://www.commandlinefu.com/commands/view/402/exclude-grep-from-your-grepped-output-of-ps-alias-included-in-description
	alias chromekill="ps ux \| grep '[C]hrome Helper --type=renderer' \| grep -v extension-process \| tr -s ' ' \| cut -d ' ' -f2 \| xargs kill"
	alias chromiumkill="ps ux \| grep '[c]hromium --type=renderer' \| grep -v extension-process \| tr -s ' ' \| cut -d ' ' -f2 \| xargs kill"