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Archive for the 'NIX Posts' Category

Linux: Getting new full speed USB device using ohci_hcd and address or device descriptor read/64, error -62

Tried to connect my Camcorder to my RHEL based system over here but instead of connectivity I got: # grep usb /var/log/messages Aug 28 14:08:32 mbpc kernel: usb 7-4: new full speed USB device using ohci_hcd and address 3 Aug 28 14:08:32 mbpc kernel: usb 7-4: device descriptor read/64, error -62 Aug 28 14:08:32 mbpc […]

Dual Gateway / Router setup with DD-WRT and TP-LINK TL-WR1043ND

In this post we'll look at setting up a dual router 1GB/s home network using the TL-WR1043ND routers, both with DD-WRT software.  DD-WRT is one of the documented projects and it goes a long way in making the product very stable and easy to work with. The routers are also capable of Wireless N connections […]

HTPC / Backup Home Server Solution using Linux

Overview: HTPC / Home Backup: MDADM, RAID6, LVM, XFS, CIFS and NFS In this post we'll take a look at setting up a 4TB storage, HTPC, and active backup using basic components that can be bought from the local PC store and freely available software.   Here I set out to try and consolidate my storage […]

LINUX: Persistent naming of SATA devices through UDEV rules.

Here we'll look at obtaining persistent naming rules for SATA devices so we can reference these hardware devices through a constant name.  This is particularly useful when one needs a persistent name to a device through unique serial and model numbers that remains the same throughout reboots / restarts and shutdowns.  In this post, we'll […]

Linux Networking: Persistent naming rules based on MAC for eth0 and wlan0

PROBLEM You've got a set of devices but their names, such as NIC / Network card names keep changing on each reboot or reconnect.  This is a continuation of Linux Networking: device eth0 does not seem to be present, delaying initialization.  where we resolved a similar issue due to naming but here we'll make it […]

AWK for Human Beings

This is a quick and dirty AWK tutorial demonstrating the most common usages and features that one can use on a daily basis by human beings.  Three variants: AWK standalone, integrated into ksh, and one-liner are provided.    On my system, AWK pointed to GAWK.  GAWK has an expanded command set but here we will […]

Linux: Resetting an MD5 hash for ssh or ftp login.

Just happened to have forgotten a password for one of my user accounts on my workstation and remembered a handy little thing one can do to reset a pass. If you have root access, one can simply regenerate the MD5 hash with:

Configuring Linux Bonding: bond0 using eth0 eth1 and wlan0

This is a simple howto tutorial for creating and bonding three interfaces, a wireless one (wlan0), one RealTek based GIGe cabled NIC (eth0) and another alternate Intel based GIGe NIC (eth1).  This is partially a conceptual howto since a home HTPC / Backup center probably doesn't need three separate NIC's for redundancy.  However, with recent […]

LINUX PXE: Installing and Network Booting Windows 7, Linux, Solaris using PXE

In this post we'll configure network booting through PXE.  PXE stands for Preboot eXecution Environment and has been available for Network Devices (or NIC's) for some time.  Such a network boot setup has many uses in particular in OS setup and deployment.  In this post I'll introduce the steps to quickly set one up.  The […]

Linux Administration: Resetting the root password when forgotten.

So you've lost the password to the root account.  Worst, you've had a boot password and it was the same.  Here are some instructions on how to get back into your system:


     
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