Linux

Install Steghide CentOS 6

Steganography

Steghide is steganography tool to hide data in various kinds of image- and audio-files.

first of all lets download RMP for centos

after Download we can install it

if no error will be displayed then its ready but if error for example somthing like this

Need to install all dependencies

you will get

now you can use it for example

  • in.jpg is file where we want to add hidden data
  • out.jpg is ready file after add is complated
  • password is pass to encrypt data

PNG/JPG Images Optimization Recursively

Optimization of PNG and JEPG images, using two different utilities first one is jpegoptim which is used to optimize JEPG images to use it recursively and optimize all of images in directory and sub directory you can use this command:

This will strip all data and make images progressive.

PNG images can be optimized with Optipng

 

Install Skype on Arch linux

skype43linux

Skype is in multilib repo which by default is not enabled, so we should edit arch repo file

uncomment following lines

and now run installation with pacman

 

Recover Broken Mysql Innodb Database

recover mysql innodb

This tutorial can be used to recover data from broken mysql, for example if you get error

or any other

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Top Hex Editors Linux

For manipulation of binary data there are tons of tools on Linux but I will try to list some of great looking GUI tools

Bless Hex Editor

Bless Hex

Written in mono/gtk it can be used in any platform where mono and gtk can work, this is feature which is listed on main website

Efficiently working with large files with fast data rendering on screen.
Supports multilevel redo/undo operations.
You can customizable data views use multiple tabs use find and replace operations.
Export of data to plain text and html or you can use plugins for different formats.

wxHex Editor

wxhexeditor

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LAMP Server Arch Linux

This is tutorial how to install Apache,Mysql,PHP on arch linux.

First of all lets update arch linux:

Now we can continue, install apache server:

Mysql:

you will see something like this:

I’m recommending mariadb so click 1, before starting mysql we need to initialize the mariadb data directory and after start it:

now to create password for mysql root user type:

arch mysql password

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Ubuntu add user & disable root

First of all lets add user

enter password and confirm information, now add user to sudoers

now open for editing ssh config

find

and change it to

 

Restart ssh service and your done.

 

Ubuntu Change SSH Port

Open SSH config file

There should be string Port you can use Ctrl+w to search for it, so you will find something like

change 22, for example to 21989, now restart SSH service

You can also open port if it’s closed

 

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