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How to undelete removed/deleted files on an ext3 / ext4 fs?
Here is a new tool that will help you with recovering files from an ext3 or ext4 partition:http://extundelete.sourceforge.net/ ...
How to convert an ext3 partition to ext4?
Well, this is actually not too hard and ext4 gives better performance in various cases, so an update to ext4 is surely not a bad ...
How do I upgrade from Debian Lenny to Squeeze?
Here you go: (please do that in textmode and not in your GUI, so KDE or whatever can be restarted without any issues) vi /etc/apt/sources.list (change lenny to ...
How to fix "Internal error: Berkeley DB error for filesystem"?
After working with the subversion system pretty flawlessy for years (as standalone service and within apache), I had this problem in my apache log files: [Fri ...
How to duplicate / copy partition table?
In Linux there is a small helpful tool for this, called sfdisk. It is able to diplays and manipulate the partiation table.This comamnd reads the ...
How to change crontab email setting ( MAILTO ) ?
This is quite easy, just add the MAILTO line to your crontab, preferable to the top, so config parameters stay visible no matter how many ...
How to repair GRUB with a live cd?
There are many things that could go wrong with a GRUB installation and one way to get the system booting is some kind of a ...
How to fix mdadm / mdraid resync=PENDING or auto-read-only?
This happend to me when I created a new md device and checked for the status in /proc/mdstat.The problem is obviously just that the resync ...
How to edit a very large file?
I had to remove one line of a 20GB MySQL dump file and was wondering how I could do this. Actually there are a few ways, ...
How to display environment variables?
This is also pretty simple: printenv ...
How to change speed / duplex setting of a network connection?
Well, you can do this with mii-tool or ethtool, both should be working nicely. On Debian to install those, run this: aptitude install ethtool net-tools After that ...
How to restart network card auto-negotiation?
This might be necessary some times, here the line to do it with ethtool: ethtool -r eth1 And here with mii-tool: mii-tool -r eth1 ...
How to clean drives from software raid (mdadm)?
Software raid is really great in Linux, but once you need to repurpose old drives,or lets say some other implementation of software raid has fucked ...
How to skip or bypass fsck on reboot / system startup?
There are a few ways to make this happen, the simplest way is to reboot the machine with this command: shutdown -rf now Specifically for Debian you ...
How to duplicate / copy GPT partition table?
sfdisk doesn´t do the trick on GPT tables, so this will not work. This is also easy, we need to install aptitude install sgdisk and then run this ...
How to get summarized sizes of folders including their subfolders?
Well there are few ways to achieve this, here are two: du -sh /* This will spit out a summary for the whole root of your filesystem ...
How to ensure PHP session concurrency on multiple HTML servers?
well, this is a quite common problem, depending on which load balance system you are using, let us first explain the problem itself: You got 2 HTML ...
dbmail + MySQL + postfix + SMTP auth via SASL2 + Debian Etch/Lenny
Hello! well, this caused me a load of headache, so here is a quick guide to make it work,but first of all a few things ...
How to install dbmail 3 from git on Debian Squeeze?
Here are the steps to get you started (I put my stuff compiled from source into /usr/src):First of all we install a few libraries: aptitude install ...
How do I flush the exim mail queue?
Hi Folks, well, here is something to get you started: exim -qf exim -qff The first command will rerun the mail queue and the second one will also try ...
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