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How to restore deleted file on ext2

Post date: December 15, 2006, 19:12 Category: System Views: 2983 Comments
Tutorial quote: This text describes the steps needed do recover the data of a file that was recently deleted.

Three Ways To Access Linux Partitions (ext2/ext3) From Windows On Dual-Boot Systems

Post date: January 20, 2008, 12:01 Category: Miscellaneous Views: 6444 Comments
Tutorial quote: If you have a dual-boot Windows/Linux system, you probably know this problem: you can access files from your Windows installation while you are in Linux, but not the other way round. This tutorial shows three ways how you can access your Linux partitions (with ext2 or ext3 filesystem) from within Windows: Explore2fs, DiskInternals Linux Reader, and the Ext2 Installable File System For Windows. While the first two provide read-only access, the Ext2 Installable File System For Windows can be used for read and write operations.

Recover deleted files from NTFS filesystem from Ubuntu Linux - Ntfsundelete

Post date: October 10, 2010, 05:10 Category: Security Views: 4058 Comments
Tutorial quote: If you have accidentally deleted files from your hard drive, don't panic! You can easily recover deleted files whether you are using a Windows PC (NTFS) or Linux OS. You can undelete files with almost guaranteed success. The most important thing is to act as soon as you realize that the files are lost.

The PartImage Handbook

Post date: May 21, 2005, 15:05 Category: Software Views: 2505 Comments
Tutorial quote: - Partition Image is a Linux/UNIX partition imaging utility: it saves partitions formatted using the Ext2FS (the linux standard), ReiserFS (a new journaled and powerful file system), JFS IBM journaled file systems from AIX, NTFS (Windows NT File System), FAT16/32 (DOS & Windows file systems), or HPFS (OS/2 file system) file system formats to an image file. Only used blocks are copied. The image file can be compressed in the GZIP/BZIP2 formats to save disk space, and split into multiple files to be copied on removable media (ZIP for example), or burned on a CD-R ...

- This allows the user to save a full Linux/Windows system, with a single operation. When problems occur (viruses, crash, error, ...), you just have to restore, and after several minutes, all your system is restored (boot, files, ...), and fully working.

- This is very useful when installing the same software on many machines: just install one of them, create an image, and then restore the image on all other machines. After the first one, each subsequent installation can be made automaticaly, and only requires a few minutes.

How to restore a hacked Linux server

Post date: July 30, 2006, 18:07 Category: Security Views: 3692 Comments
Tutorial quote: Every sysadmin will try its best to secure the system/s he is managing. Hopefully you never had to restore your own system from a compromise and you will not have to do this in the future. Working on several projects to restore a compromised Linux system for various clients, I have developed a set of rules that others might find useful in similar situations. The type of hacks encountered can be very variate and you might see very different ones than the one I will present, or I have seen live, but even so, this rules might be used as a starting point to develop your own recovery plan.

Recover your deleted jpeg pictures from filesystem or camera memory card - recoverjpeg

Post date: October 10, 2010, 05:10 Category: Desktop Views: 2324 Comments
Tutorial quote: Deleted or lost files can usually be recovered from failed or formatted drives and partitions, CD-ROMs and memory cards using the free software available in the Ubuntu repositories. The data is recoverable because the information is not immediately removed from the disk.

Clone/Back Up/Restore OpenVZ VMs With vzdump

Post date: November 25, 2008, 11:11 Category: Miscellaneous Views: 3768 Comments
Tutorial quote: vzdump is a backup and restore utility for OpenVZ VMs. This tutorial shows how you can use it to clone/back up/restore virtual machines with vzdump.

Restoring a Sun system using JumpStart technology

Post date: April 13, 2005, 05:04 Category: Installing Views: 3921 Comments
Tutorial quote: If a server crash and the file systems are corrupted or totally destroyed, then the only way to recover the data is to restore from backups. If it is only user data that is corrupted, the task is in general simple, but if the system disk fails, then there is a little bit more work involved in order to to recover the system. This article explains how to backup Sun systems using ufsrestore over NFS, and how to use Sun's JumpStart technology to restore Sun servers and workstations over the network.

Using extended attributes to better protect files

Post date: August 18, 2005, 18:08 Category: System Views: 11559 Comments
Tutorial quote: How many times have you accidentally overwritten a configuration file during an etc-update that you had customized? I had been aware of extended attributes for a long while now, but I had never taken the time to actually use them. The extended attribute that I am mostly interested with is the immutable attribute. This attribute, which can only be set by root, prevents a file from be changed or deleted, even by root.

Getting started with RHEL4's built-in LVM tools

Post date: June 3, 2005, 16:06 Category: System Views: 6035 Comments
Tutorial quote: Many Unix administrators I know (you know who you are), always used to smirk when I talked about Linux. They could always point to the fact that regardless of whatever I could say, they had journaling file systems, which they could manage using various Logical Volume Management (LVM) tools, and I couldn't touch that.

Well, not any more! Not only does Red Hat offer ext3 as their default file system, but they offer great management tools to boot. As we know, ext2 had a great lifespan, but it was not an enterprise-ready file system that could handle large disk partitions, fast recovery from systems crashes, or large amounts of files. Journaling file systems give you the ability to recover almost instantly from a crash, as you do not need to run fsck after a restart. Similar to how databases recover from crashes, a journaling file system tracks changes to file system metadata and pretty much guarantees that either all or no updates have completed. Of course, these file systems also need elaborate tools to help better configure and manage them accordingly.
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