This is quick tip, howto get internal IP address and external IP address on Linux Shell / Command Line. This guide also show, howto make useful Bash functions to get IP addresses quickly.
Note: All functions could be named as you wish and to make functions permanent, add functions to ~/.bashrc or /etc/bashrc. Also all awk commands should work also with gawk and nawk.
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1. Get Internal IP Address(es) on Linux Shell / Command Line
1.1 Get IP and IPv6 Address by...
By default almost all Apache installation shows sensitive server information with Apache version number, server operating system details, installed Apache modules, PHP-version and so on. Attackers can use this information when performing attacks.
Some examples howto check server information that Apache sends
Error page
Use lynx
$ lynx -head -mime_header http://www.ubuntu.com
HTTP/1.0 200 OK
Date: Fri, 20 Nov 2009 09:25:46 GMT
Server: Apache/2.2.8 (Ubuntu)...
I just wrote guide, howto install SVN (Subversion) Server on Fedora, CentOS and Red Hat (RHEL). No I decided to write more information about SVN Access Control. This guide works if you have installed Apache, Subversion (SVN) and mod_dav_svn on any Linux system, like Ubuntu, Debian, Arch, Gentoo, not only Fedora, CentOS or Red Hat (RHEL).
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Setup SVN (Subversion) Access Control with Apache and mod_authz_svn
1. Change root user
su -
## OR ##
sudo -i
2....
This is guide, howto upgrade Fedora 24 to Fedora 25 using DNF. This method work on desktop and server machines.
I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade!
1. Before Upgrade
1.1 Backup Your Data
Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important step, because if...
This is guide with screenshots, howto install Fedora 21 (F21) using Live DVD or Live USB. Fedora 21 Installation can be done also with using Fedora NetInstall (Net Install) with gPXE and BFO (boot.fedoraproject.org).
Fedora 21 is "nameless" release, no code name, like Heisenbug (F20), Schrödinger's Cat (F19), Spherical Cow (F18), Beefy Miracle (F17) and Verne (F16).
1. Before Fedora 21 Installation
1.1 Download Fedora 21 Live DVD/USB Image
Download Fedora 21 here.
Select your...
This is guide, howto upgrade Fedora 20 (Heisenbug) to Fedora 21 using FedUp.
I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade!
1. Before Upgrade
1.1 Backup Your Data
Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important, because if something go wrong and you have to do fresh...
This is guide, howto upgrade Fedora 23 to Fedora 24 using DNF.
I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade!
1. Before Upgrade
1.1 Backup Your Data
Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important step, because if something goes wrong and you have to do fresh...
Please note: This guide still working normally if you want install Sun/Oracle Java 7, but if you want Java 8 version, then check Install Oracle Java JDK/JRE 8 on Fedora, CentOS/RHEL.
This is guide, howto Install Sun/Oracle Java JDK and JRE 7 CPU (7u79) and PSU (7u80) on Fedora 24/23/22/21/20/19/18/17/16/15/14/13/12, CentOS 7.2/6.8/5.11, Red Hat (RHEL) 7.2/6.8/5.11. Read more, what is difference between CPU and PSU release.
If you're looking instruction for Sun/Oracle Java JDK/JRE...
Are you looking LibreOffice 5.2/5.1/5.0 Install guide?
This is quick guide to install Apache OpenOffice 4.1.2 on Fedora 24/23/22/21/20/19/18/17/16/15/14/13/12, CentOS 7.2/6.8, Red Hat (RHEL) 7.2/6.8 with using Apache OpenOffice original RPM packages.
What's new in Apache OpenOffice 4.1.2 release
New Sidebar - The Sidebar makes better use of today's widescreen displays than traditional toolbars
Interoperability Improvements
DrawObject...
This is guide, howto install latest Eclipse Mars.2 4.5.2 on Fedora, CentOS and Red Hat (RHEL). This guide should work with Fedora 24/23/22/21/20/19/18/17/16/15/14/13/12, CentOS 7.2/6.8/5.11 and Red Hat (RHEL) 7.2/6.8/5.11 and even with earlier versions. Latest working version on CentOS/RHEL 5.11 is Eclipse Luna 4.4.2.
Eclipse is a multi-language software development environment comprising an integrated development environment (IDE) and an extensible plug-in system. It is written primarily in...
Looking Fedora 23/22/21 nVidia Drivers Install Guide?
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This is guide, howto install nVidia proprietary drivers on Fedora 20 "Heisenbug" and disable Nouveau driver. This guide works with GeForce 6/7/8/9/200/300/400/500/600/700 series cards. Older GeForce series cards works with 304.xx nVidia drivers and newer 8/9/200/300/400/500/600/700 series cards works with 331.xx nVidia drivers.
Fedora 20 nVidia driver installation is not much different from previous Fedora...
This is guide with screenshots, howto install Fedora 23 (F23) using Live DVD or Live USB. Fedora 23 Installation can be done also with using Fedora NetInstall (Net Install) with gPXE and BFO (boot.fedoraproject.org).
1. Before Fedora 23 Installation
1.1 Download Fedora 23 Live DVD/USB Image
Download Fedora 23 here.
Select your version, Fedora 23 Workstation, Fedora 23 Server or Fedora 23 Cloud. On this guide I use Fedora 23 Workstation 64-bit.
1.2 Burn Fedora 23 Image to DVD,...
This is guide, howto upgrade Fedora 22 to Fedora 23 using DNF.
I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade!
1. Before Upgrade
1.1 Backup Your Data
Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important step, because if something go wrong and you have to do fresh install,...
CentOS 7 is released, check CentOS 7.1 Netinstall guide.
CentOS 6 is released, check CentOS 6.7 Netinstall guide.
If the purpose is to upgrade from an older version of CentOS to CentOS 5.11 then read following guide: Upgrade to CentOS 5.11 From 5.10 (5.9, 5.8, 5.7, 5.6, 5.5, 5.4, 5.3, 5.2, 5.1, 5.0) guide
This is CentOS (The Community ENTerprise Operating System) 5.11 Linux Network installation (NetInstall) step-by-step walkthrough with screenshots....
This is quick guide, howto Backup (dump) and Restore (load) SVN (Subversion) repository on Linux. This is actually very simple and important task. SVN backup and restore is useful when you want to move your repos to new server or you need to recover your data. I assume here that you have Subversion (SVN) installed and you have existing repositories. If you installed and created testrepo with earlier guide then you can check real examples.
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1. Backup (dump) SVN...
I like very much Ethan Schoonover Solarized color palette. So I decided write a guide, howto get Solarized colors to most commonly used Linux terminals (Gnome-Terminal, Konsole, XFCE Terminal, Mate-Terminal), Text editors (Gedit, Vim) and IDEs (Eclipse, NetBeans). These are not my projects, so the greatest honor belongs, of course, these projects owners and Ethan Schoonover.
1. Install Needed Tools (git, mercurial, 7-zip)
2. Create and Change to Solarized Directory
3. Solarized...
PHP APC (Alternative PHP Cache / Opcode Cache) is framework that optimizes PHP intermediate code and caches data and compiled code from the PHP bytecode compiler in shared memory. APC Opcode Cache is quickly becoming the de-facto standard PHP caching mechanism.
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PHP APC installation is very easy, example with Fedora / CentOS / Red Hat (RHEL) you can check following guides to see howto install it:
Install Nginx/PHP-FPM on Fedora/CentOS/Red Hat (RHEL)
Install...
PHP Command Line Interface (CLI) has not built-in coloring for script output, like example Perl language has (perldoc.perl.org/Term/ANSIColor.html). So I decided to make own class for adding colors on PHP CLI output. This class works only Bash shells. This class is easy to use. Just create new instance of class and call getColoredString function with string and foreground color and/or background color.
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PHP Class for Coloring PHP Command Line (CLI) Scripts...
This is quick guide, howto upgrade to CentOS 5.11 from CentOS 5.10 (5.9, 5.8, 5.7, 5.6, 5.5, 5.4, 5.3, 5.2, 5.1, 5.0).
1. Change to root User
su -
## OR ##
sudo -i
2. Backup all important data
Backup /etc diretory
Backup important logs /var/log
Backup web server configs and sites
Dump MySQL databases
Dump PostgreSQL databases
Backup all what you need if something goes wrong
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3. Check list of packages that are going to be...
CentOS 6.6 is released. This is quick guide, howto upgrade to CentOS 6.7 from CentOS 6.6/6.5/6.4/6.3/6.2/6.1/6.0. I have tested this method on multiple CentOS 6 (servers / desktops) and everything looks work fine after upgrade.
Upgrade to CentOS 6.7 from CentOS 6.6/6.5/6.4/6.3/6.2/6.1/6.0
1. Change to root User
su -
## OR ##
sudo -i
2. Backup all important data
Backup /etc diretory
Backup important logs /var/log
Backup web server configs and sites
Dump MySQL...
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