unix Google Group

Rebuilding failed Linux software RAID

elsid...@gmail.com (elsiddik) — Wed, 11 Feb 2009 18:55:24 UT

Recently I had a hard drive fail. It was part of a Linux software RAID
1 (mirrored drives), so we lost no data, and just needed to replace
hardware. However, the raid does requires rebuilding. A hardware array
would usually automatically rebuild upon drive replacement, but this
needed some help.

Linux Networking

elsid...@gmail.com (elsiddik) — Mon, 26 Jan 2009 10:37:33 UT

This tutorial covers TCP/IP networking and system configuration
basics. Linux can support multiple network devices. The device names
are numbered and begin at zero and count upwards. For example, a
computer running two ethernet cards will have two devices labeled /dev/
eth0 and /dev/eth1. Linux network configuration, management,

Jessica Biel Dancing

bettyedriscol0...@gmail.com (bettyedriscol0945) — Sat, 06 Sep 2008 20:29:42 UT

Jessica Biel dances and shakes that great ass for a total of 1 minute!
[link]

Running MS Office and IE on Linux

elsid...@gmail.com (elsiddik) — Fri, 29 Aug 2008 10:11:37 UT

Wine began its life in 1993 as a way to run Windows 3.1 applications
in Linux. Wine may well have had the longest beta period in history at
15 years, however version 1.0 was recently released in June 2008.

In this article, I show you how to install Wine, Microsoft Office
2003, and Internet Explorer using my Red Hat derivative system (CentOS

Using Software RAID-1 with FreeBSD

elsid...@gmail.com (elsiddik) — Wed, 23 Jul 2008 09:54:50 UT

Have you ever needed a software RAID solution for a low-end server
install? Perhaps you've wanted your workstation to take advantage of
the redundancy provided by a disk mirror without investing in a
hardware RAID controller. Has a prior painful configuration experience
turned you off software RAID altogether on Unix systems?

POSIX APIs and System Calls

elsid...@gmail.com (elsiddik) — Tue, 04 Mar 2008 18:35:37 UT

POSIX APIs and System Calls

Let's start by stressing the difference between an application
programmer interface (API) and a system call. The former is a function
definition that specifies how to obtain a given service, while the
latter is an explicit request to the kernel made via a software
interrupt.

Build your own distro.

elsid...@gmail.com (elsiddik) — Wed, 13 Feb 2008 18:43:55 UT

Making your own customised Linux distro is simpler than you might
think - and rewarding too. Don your overalls and hard hat, and we'll
show you how to start building your ideal distro.
Creating something, from a simple meal to a complex painting, is
rewarding and satisfying - especially if you love the end result. The

System Call Handler and Service Routines

elsid...@gmail.com (elsiddik) — Fri, 01 Feb 2008 16:22:24 UT

When a User Mode process invokes a system call, the CPU switches to
Kernel Mode and starts the execution of a kernel function. As we will
see in the next section, in the 80 x 86 architecture a Linux system
call can be invoked in two different ways. The net result of both
methods, however, is a jump to an assembly language function called

Getting and Giving Help: A Perl Documentation Primer

elsid...@gmail.com (elsiddik) — Sat, 26 Jan 2008 14:01:41 UT

By Dan Ragle

From time to time, even the most experienced programmers get stuck.

Whether the source of the blockage is a function call or included
module that the programmer isn't fully acquainted with, problems
related to the deployment of a working script on a new operating
system (possibly with a different version of the Perl interpreter), or

FreeBSD-Quota-Howto

elsid...@gmail.com (elsiddik) — Sat, 26 Jan 2008 11:57:05 UT

This document describes how to enable quota on a FreeBSD system.
Please be aware that this document comes without warranty of any kind!
read full article on : [link] .

1 Compile a New Kernel

First you have to compile/install a kernel that supports quota (not

Firewall - Checking the Input, Output, and Forwarding Rules

elsid...@gmail.com (elsiddik) — Wed, 16 Jan 2008 19:36:29 UT

Checking the Input, Output, and Forwarding Rules

Now that you've seen what a firewall chain listing looks like and what
formatting options are available, we'll go through brief lists of
INPUT, OUT, and FORWARD rules. The sample rules are representative of
some of the rules you'll most likely use yourself.

Kernel information

elsid...@gmail.com (elsiddik) — Sat, 12 Jan 2008 19:07:40 UT

Kernel Information

Many of the entries in /proc provide access to information about the
running kernel's configuration and state. Some of these entries are at
the top level of /proc; others are under /proc/sys/kernel.

Version Information

The file /proc/version contains a long string describing the kernel's

Compiling the Linux Kernel

elsid...@gmail.com (elsiddik) — Sat, 05 Jan 2008 19:48:29 UT

It is important to know roughly how to compile a Linux kernel in case
the need arises. Here's a perfect examplewhen the 2.6 kernel was
officially released in December 2003, the new kernel did not appear in
any distributions for several months. Even though a lot of features
found in the mainline 2.6 kernel source have been back-ported to the

The OpenBSD Packet Filter

elsid...@gmail.com (elsiddik) — Sat, 22 Dec 2007 20:32:05 UT

To activate PF and have it read its configuration file at boot, add
the line

pf=YES

to the file /etc/rc.conf.local.

Reboot your system to have it take effect.

You can also activate and deactivate PF by using the pfctl(8) program:

# pfctl -e
# pfctl -d

to enable and disable, respectively. Note that this just enables or

Using fork and exec Together

elsid...@gmail.com (elsiddik) — Fri, 21 Dec 2007 19:11:26 UT

A common pattern to run a subprogram within a program is first to fork
the process and then exec the subprogram. This allows the calling
program to continue execution in the parent process while the calling
program is replaced by the subprogram in the child process.

<code>

/* Spawn a child process running a new program. PROGRAM is the name