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How to Install Development Tools on CentOS, RHEL & Fedora

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Set up A Basic HTTP File Server in Ubuntu 14.04

As you’ve probably already noticed, Ubuntu shows Amazon ads in Unity Dash search results. Here is the quick guide how to disable it in Ubuntu. First open System Setting on the Launcher, then click Security & Privacy . Under Search tab, turn off “When searching in the dash: Include online search results” Just so easy!

Easily Eject/Close CD-Rom Tray in Ubuntu via Keyboard Shortcut

Without pushing the physical eject button, here’s how to easily toggle (eject/close) your CD-Rom tray via keyboard shortcut or hotkey in Ubuntu. In Ubuntu Linux, we can use eject command to eject CD-Rom tray, eject -t command to close, and eject -T to toggle (if open, close and if closed, open) CD-Rom tray. For those who hate Linux command, toggle cd-rom tray using a hotkey is easier since Ubuntu provides a reserved Eject option in the keyboard settings utility. To enable option and assign a keyboard shortcut: Open System Settings from the Dash or Unity’s left Launcher. When it opens, click on Keyboard icon and navigate to Shortcuts tab. Select “Sound and Media” from the left pane, then you should see the Eject option in the bottom of right pane. click to highlight it and assign a hotkey by pressing a key combination on your keyboard. Finally press the shortcut key to eject, or close if device support, the CD-Rom tray.

Ubuntu 16.04 LTS – How To Configure SAMBA Full Audit

This guide explains how to configure Samba Full Audit in Ubuntu 16.04 with anonymous & secured samba servers. Advanced Configuration In this part I will show you how to configure . Step 11 – Open config file nano /etc/samba/smb.conf and add the following line: vfs objects = full_audit full_audit:success = mkdir rmdir read pread write pwrite rename unlink full_audit:prefix = %u|%I|%m|%S full_audit:failure = none full_audit:facility = local5 full_audit:priority = notice recycle:repository = /home/recycle/ recycle:keeptree = yes recycle:versions = yes log file = /var/log/samba/samba.log You can add more attries but I strongly recommended to add only this mkdir rename unlink rmdir write . These are other attributes for full_audit:success = connect disconnect opendir mkdir rmdir closedir open close read pread write pwrite sendfile rename unlink chmod ...

How to configure firewall and fail2ban for prevent “brute force attack” Zimbra 8.6 on Ubuntu (Server) 14.04 LTS Step-by-Step

Fail2ban is an intrusion prevention framework written in the Python programming language. It is able to run on POSIX systems that have an interface to a packet-control system or firewall installed locally for example, iptables or TCP Wrapper. Fail2ban operates by monitoring log files for selected entries and running scripts based on them. Most commonly this is used to block selected IP addresses that may belong to hosts that are trying to breach the system’s security. It can ban any host IP that makes too many login attempts or performs any other unwanted action within a time frame defined by the administrator. I’ll be logged in as root. Step 1 – Update repositories. root@mail:/# apt-get update root@mail:/# apt-get upgrade Step 2 – Install fail2ban . root@mail:/# apt-get install fail2ban Step 3 – Backup this file. root@mail:/# cp /etc/fail2ban/action.d/iptables-allports.conf /etc/fail2ban/action.d/iptables-allports.conf.backup Step 4 – Open this file /etc/fail2ban/action.d/iptab...

Install BirdFont Font Editor 2.2.0 in Ubuntu

BirdFont font editor reached the 2.2.0 release on 09 Mar 2015. Here’s the changes and how-to-install/upgrade instructions. BirdFont is a free font editor that lets you create vector graphics and export TTF, EOT & SVG fonts. It is developed by Johan Mattsson with a good number of people contributing translations and patches. The editor is written in Vala and has around 50 000 lines of code. ChangeLog: 2.2.0: Customizable guides Bug fixes and many small UI improvements 2.1.0: A new spacing tab Improved Beziér editing Side bearing metrics in edit view Key bindings for zoom in and zoom out in kerning tab Bug fixes How to Install/Upgrade Birdfont: Birdfont is available in an unofficial PPA repository for Ubuntu 14.04, Ubuntu 14.10, Ubuntu 15.04, and Linux Mint 17 . To add the PPA and install birdfont: Open Terminal (Ctrl+Alt+T) and run below commands one by one: sudo add-apt-repository ppa:ubuntuhandbook1/birdfont sudo apt-get update sudo apt-get install birdfont Or you can download...

See The Default Wallpaper in Ubuntu 15.04 Vivid

The default desktop wallpaper for the upcoming Ubuntu 15.04 Vivid Vervet was announced today. Will Cooke, the Ubuntu Desktop Engineering Manager at Canonical, today posted this purple wallpaper as the official Ubuntu 15.04 wallpaper. Also there’s an alternative greyscale version: Both wallpapers can be downloaded at bugs.launchpad.net (attachment)

Upgrade to Xfce 4.12 in XUbuntu 14.04/Linux Mint 17

Xfce team recently announced the Xfce Desktop 4.12, a new stable release that supersedes Xfce 4.10. The new release comes after 2 years and 10 months of work and features: Alt+Tab dialog with optional windows preview and a list mode (Settings Manager -> Window Manager Tweaks) Xfce panel intelligently hide and GTK3 plugins support. Better multi-monitor support. Allow set different wallpapers for each workspace previews for icons/themes in appearance window. Xfsettingsd now supports libinput. power and brightness indicator Thunar improvements and more, see the release note . How to Upgrade to XFCE 4.12: For XUbuntu 14.04, Xubuntu 14.10, and Linux Mint 17 Xfce edition, XFCE 4.12 is available for upgrade in its official PPA . Open terminal emulator and run below commands one by one to add the PPA, and upgrade your system including xfce4 desktop to latest: sudo add-apt-repository ppa:xubuntu-dev/xfce-4.12 sudo apt-get update sudo apt-get dist-upgrade You may also install the xfce4-powe...

Install Yarock Music Player 1.0.1 in Ubuntu/Linux Mint

Yarock is Linux native music player written in C++ using Qt and Phonon multimedia framework. It’s designed to provide an easy and pretty music collection browser based on cover art. Yarock player features: Music collection database (SQLite 3) Browse your local music collection based on cover art Easy search and filter music collection Manage favorites item (album, artist) Play music directly from collection or playqueue Simple Playqueue Smart playlist generator Support mp3,Ogg Vorbis,flac music files (depending on phonon backend) Support load/save playlist file (m3u, pls, xspf) Play radio stream (tunin, shoutcast, dirble, …) Mp3Gain tag support for volume normalization Cover art download Last Fm scrobbler Command line interface, Mpris interface Clean and simple user interface No GNOME or KDE dependancies Screenshots: Yarock player is under active development. The most recent release is version 1.0.1 which features: BugFix : database issue BugFix : fix song lenght update (#1393027)...

How to Install Latest Mkvmerge GUI in Ubuntu

MKVToolNix, is a set of tools (e.g. mkvmerge gui, mkvinfo) to create, alter and inspect Matroska files under Linux. As both Matroska and MKVToolNix are under heavy development here’s how to install the latest release from its official repository and keep it up-to-date through Software Updater . 1. Add MKVToolNix repository MKVToolNix repository so far supports Ubuntu 12.04, Ubuntu 14.04, Linux Mint 17, and Ubuntu 14.10. To add it, open Software & Updates -> Other Software tab. Click on Add button and input below line in pop-up dialog: deb http://www.bunkus.org/ubuntu/trusty/ ./ You may replace trusty with utopic or precise for Ubuntu 14.10 or 12.04. 2. Download and import the key Open terminal from the Dash, Application Menu, or by pressing Ctrl+Alt+T . When it opens, run below command to get the keyring: wget --no-check-certificate http://www.bunkus.org/gpg-pub-moritzbunkus.txt -O - | sudo apt-key add - 3. Install/Upgrade MKVToolNix: Finally you can install the tool via ...

How to Enable SSH as root on AWS Ubuntu Instance

Generally when you tried to access Ubuntu vm on AWS server as user ‘ root ‘. You will find a message like below. It means you can’t SSH to your server directly using root account, and first you have to login as user ‘ubuntu’ first and then use ‘ sudo su – ‘ to get root access. Please login as the user “ubuntu” rather than the user “root”. Warning => One of bigger security hole you are going to create in your server by opening direct root access. We recommend to not to do this until a more specific reason. Enable SSH as root on AWS Ubuntu: Follow the below steps to enable ssh as root user on AWS ubuntu instances. The same steps you can follow for other Linux distributions AWS instances like CentOS, RHEL, LinuxMint, Debian etc. SSH to Server – Login to your server with ubuntu user and then switch to root user with sudo command. $ ssh -i server.pem ubuntu@remote-server.com After successful login to ubuntu account switch to root account. $ sudo su - Edit authorized_keys File –...

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