In the US and Europe and many more developed parts of the world we take our internet connectivity these days for granted. (And some go into panic attacks when it’s not available…) In some parts of the world though internet connections are not as wide/broad and peak usage times can make for very slow viewing, or can interfere with other vital communications. Linux excels at SO many things and this is something we could use linux to help with…
Category: Linux Software
-
Building Deb packages from source….
Openvpn has been one of the tools of choice this week, so as I was tinkering on my ubuntu boxen…. I thought why don’t I install openvpn there as well for a little broader testing. So, I did, but was a bit disappointed to see that the version was not the most current. (Yes, they may have merged changes from the current version and left the version number at 2.0.6, but 2.0.9 is out and easy to build an rpm from source….. so….) I’ve compiled from source before, I’ve built RPM’s on Mandrake/Mandriva, but never a deb package.
-
Good collection of linux commands ….
This is a good quick reference for some command line linux commands…. pixelbeat.org – linux command line tips. Nice reference. (of course you can also make use of man/apropos and -h to find out more….)
-
Dell “open source” PC’s for sale
I saw yesterday that Dell has a page advertising computers with NO preinstalled OS. Dimension line… n series and they are targetted towards people that want to install an Open Source operating system like Linux. They do ship with a freedos install disc, but come without formatting/preinstalling anything on the hard drives.
They do note that they don’t support a non-dell installed operating system. (i.e. even if you put XP pro on it well make you prove that it’s a hardware problem.) Still, it’s good to see the option becoming available.
-
Converting mpg to dv
One of the slickest video editing tools I’ve used in linux is kino. The only problem is that it’s geared towards dv files which comes straight from a camcorder (using the dv format.) Most of my video clips are in mpg format…. so there are ways to get it converted… here’s one such suggestion….
ffmpeg -i some.mpeg -s PAL -r PAL -ar 48000 -ac 2 out.dv
of course, you may want to adjust the format (PAL/NTSC) according to your situation.
-
dvdstyler under linux
One of the utilities under Linux I’ve made use of in the last few months is Dvdstyler. It essentially will take your dvd ready video and make the DVD filesystem (as well as menus). Simple menus are very straightforward as is setting bookmarks (chapters) within a file imported into a dvd project. However… for the more interesting configurations… like having a title play immediately upon disc insert like this you might want to consult the dvdstyler wiki at sourceforge.net.
-
Internet Explorer 7 on linux
Haven’t had the chance to try this one firsthand yet, although I’ve been watching for this. You may be familiar with ies4linux which is a script that uses wine to download/install multiple versions of Internet Explorer on a linux install. (But why oh why would you do this?) For many that do web design it’s a tremendously good idea to test what a website looks like in multiple browsers because they all have their own unique …. quirks. Of course, there are other reasons…. sites that refuse to work with anything but IE. (Blue Cross/Blue Shield for instance has some web apps that will not work with anything else.)
Well… now Internet Explorer 7 is supported by ies4linux….
-
Software raid fun…. device detection order
Anyone that’s setup software raid on a system with multiple storage adapters has probably run into this kind of issue, but I thought I’d mention it. Last weekend I built a machine to replace my server (the server was to be captured into a VM). The main system was going to be installed onto dual IDE drives, the VM partition and other data on dual 400GB SATA drives. Well, install went well after getting past some of the irq issues I mentioned in a previous writeup. md0 was /boot and so on…. (md0 residing on the dual ide drives.) When the system went to reboot though it didn’t get very far. It complained of not finding a boot image (I think that was the message – didn’t make a note.)
-
Is something up with ordb.org?
I’ve noticed several times in the last week a server of mine that is using postfix has rejected messages due to a failure in the lookup at relays.ordb.org. At first, I thought this was just a false positive in the database at ordb… but this morning I finally “caught it” while it was happening and went to pull up the ordb.org web page. It took…. 30-45 seconds and then proceeding to do a search on the rejected IP took another stretch. In looking at the logs it appears that there may be blanket rejections if the ordb.org check times out.
Here’s the postfix config setting….
smtpd_client_restrictions = permit_mynetworks,reject_rbl_client relays.ordb.org -
VMware guest unable to access USB devices
I ran into this some time back and found the solution a few months later and was reminded today to document it here…. The situation is this… Linux host for VMWare server, the guest machine has usb support and in vmware, you can go to VM, Removable devices and in spite of the fact you have usb devices on the system, nothing is listed as available to use in the VM. Well, it seems this is not an isolated problem. First you need to be sure the usb device is not in use by the host system. But, there’s something else that you need. VMWare uses usbfs to keep track of usb devices and a few distributions ( Ubuntu Linux 6.06 SUSE Linux 10.1, SUSE Enterprise Linux Server 10, Mandriva Linux 2006, SLES9 SP3 64 bit) don’t enable it by default. ( mount -t usbfs none /proc/bus/usb ) should do the trick (as root) or you could set it in fstab usbfs /proc/bus/usb usbfs auto 0 0 (and now I’m thinking I may have already posted this once…. )