Posted by suvi under
Ubuntu
Old hardware? Want a faster boot up? Need to free some system resources? Want snappier applications? This is for you. Note, I wouldn’t suggest doing anything within this if it doesn’t make sense to you.
Boot Process
1. Remove Network Manager if you do not need it “sudo apt-get remove network-manager”. If possible give yourself a static IP in /etc/network/interfaces like so:
auto lo
iface lo inet loopback
Read more at Tux Training
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Security
gnoMint is a desktop application that lets you easily manage your own certificate authority (CA). Many secure communications technologies use digital certificates to ensure that the party or service they are connecting with is not an impostor. For many people, the main exposure to digital certificates comes when they visit an HTTPS Web site and see a certificate to validate that they have contacted the right Web server.
Read more at Linux.com
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Email
A mail transport agent (MTA) provides the “plumbing” for your email system by taking mail from a client application such as Evolution or Mozilla Thunderbird and routing it to the correct location on the right machine. There are plenty of good MTAs, such as Postfix, Sendmail, and qmail, but these popular mail servers require a large amount of configuration, and may be overkill for users who merely want to set up an MTA to test a Web development project or need to move mail around locally. Smail is a better alternative for these scenarios because it generally requires no configuration, and its memory footprint is less than the more fully featured MTAs.
Read more at Linux.com
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Other
Maintaining filesystems can be a real administration burden. Over time you might start getting multiple copies of the same file, soft links that point to files that no longer exist, temporary files that have been hanging around longer than they should, and binaries that have been installed and not had their debugging information stripped out. fslint can help you find these troublesome files so you can clean up your filesystem.
Read more at Linux.com
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Networking,
Security
pfSense is a free, powerful firewall and routing application that allows you to expand your network without compromising its security. Started in 2004 as a child project of m0n0wall — a security project that focuses on embedded systems — pfSense has had more than 1 million downloads and is used to protect networks of all sizes, from home offices to large enterprises. pfSense has an active development community, and more features are being added in each release to further improve its flexibility, scalability, and, of course, security.
Read more at Linux.com
Posted by suvi under
Hardware,
Networking
In the annals of computer software with bizarre and seemingly random names, “Tomato” is probably one of the less weird examples as these things go. But whether you say tomay-toe or tomah-toe, this one is neither a fruit nor a vegetable—it is a firmware for wireless routers, including the popular WRT54G family.
Tomato is meant to be flashed onto your compatible wireless router to replace the stock firmware loaded by the vendor. Why do this? Stock firmware usually provides only basic configuration, administration, and management features, and is not always updated often. Alternative firmware like Tomato can effectively “unlock” advanced functionality from your router, giving it the network management capabilities of much more expensive enterprise gear. Using a firmware, such as Tomato, you can increase your router’s output power (to potentially improve wireless coverage), create rules to discriminate different kinds of network traffic, and monitor bandwidth.
Read more at Linux Planet
Posted by suvi under
Linux
In these modern times of Linux glitz, and yes, even bling (shudder) we crusty old command-line commandos sometimes like to put down our stewed prunes, ascend the podium, and remind our newer Linux compadres that underneath the tinsel and glitter lies the all-powerful command line. On good days, when our arthritis isn’t flaring up too badly, we’ll even emit a bit or two of usefulness. As it happens, all the stars briefly aligned in exactly the correct sequence and thus I was inspired to assemble this Fedora and Debian cheat-sheet, starring Yum, RPM, aptitude, dpkg, and apt-file.
Graphical package-management tools are nice, and everyone who is anyone has their favorites. But gnarly system administrators running headless boxes, users who want more speed and options, and anyone who is struggling with a broken X.org installation need to know command-line package management.
Read more at Linux Planet
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Graphics
Having used both GIMP and Adobe Photoshop I must say I personally believe GIMP is much better for common folks like you and me who need a relatively simpler set of tools to make quick edits to our Vacation pictures. Photoshop is undoubtedly more useful graphic designers, however for making quick tweaks, nothing beats GIMP. Recently GIMP 2.6 was released, so I decided to make this tutorial for those who still haven’t discovered the magic of GIMP and don’t know how to use GIMP productively.
Read more at Help For Linux
Posted by suvi under
Linux
The other day I had to come up with a way to transfer a Solaris Express nv97 DVD 3G image to remote locations while not using the network. The reason for this is, I needed to perform a LiveUpgrade on over 700 boxes and each being at a different locations. So I said to myself I guess I can put this image on a custom LiveDVD… But then I said to myself, which Linux LiveCD/DVD distro will I use???? It has to be small enough so that I can fit the Solaris Express nv97 image as well as the LiveCD Image.
Read more at LinuxDynasty
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Desktop
Thunar is the default file manager used in the stripped-back Xfce4 desktop of Xubuntu. It starts quickly and has a low-memory footprint, yet it is very powerful and provides all the features you are likely to need. In fact, it beats Nautilus in many departments when it comes to features. One feature of Thunar I particularly appreciate is the ability to rubber-band-select many files in list view, something Nautilus doesn’t allow. Thunar also includes the ability to define your own right-click functions, something that is possible in Nautilus but only if you add the Nautilus Actions component.
Thunar can be used to replace Nautilus within the Ubuntu desktop for some operations, although bear in mind that Nautilus windows will still appear sometimes, such as when using Nautilus CD-R/DVD Creator.
Read more at Ubuntu Geek
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Fedora,
PHP
This guide explains how to integrate APC
(Alternative PHP Cache) into PHP5 and lighttpd on a Fedora 9 system.
APC is a free and open PHP opcode cacher for caching and optimizing PHP
intermediate code. It’s similar to other PHP opcode cachers, such as eAccelerator and XCache.
Read more at HowtoForge
Posted by suvi under
Linux
Zivios is an open source web based identity management application featuring single sign on,
certificate authority, user, group and computer provisioning with remote management of services.
Zivios is an n-tiered PHP-5 application and uses MySQL and OpenLDAP as it’s data store, with OpenLdap
being the primary back end for identity management and application integration and MySQL being
used for panel specific data.
Read more at HowtoForge
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Virtualization,
openSuse
Kernel-based Virtual Machine (KVM) is a Linux kernel virtualization infrastructure. KVM is a full virtualization solution for Linux on x86 hardware containing virtualization extensions Intel VT (vmx) or AMD-V (svm). KVM also requires a modified QEMU although work is underway to get the required changes upstream.
Read more at www.susegeek.com
Posted by suvi under
Ubuntu
If you have files that are bigger than 4GB in size, you will find that you can’t back them up to your external hard disk, even though it has 1TB of storage space. The reason being, when you first bought the hard disk, it is pre-formatted with FAT32 format, and in case you don’t know, FAT32 has a 4GB file size restriction. This means that it can’t store files that are bigger than 4GB in size.
A good way to overcome this is to reformat the external hard disk to NTFS format. NTFS does not has a 4GB file restriction and can be accessed easily from Windows, Mac and Linux (with the help of NTFS-3G).
Read more at Make Tech Easier
Posted by suvi under
openSuse
When you accept the defaults for the Boot Loader in openSUSE at the time of installation, it will include the default openSUSE boot option, a failsafe boot option for openSUSE, a Floppy disk boot…
Read more at www.susegeek.com