The Geek Stuff

How to View, Modify and Recreate initrd.img

Sasikala — Fri, 10 Jul 2009 07:02:51 +0000

Question: How do I view, modify and recreate the new initrd.img on Ubuntu, Debian, CentOS, Fedora, Red-Hat, Arch Linux, or SUSE distributions? 1. How To View Content Of initrd.img file? initrd.img is in gzip format. So move initrd.img to initrd.gz as shown below. # cp /tftpboot/el5/initrd.img . # ls cdrom initrd.img # mv initrd.img initrd.gz Unzip the initrd.gz file [...]

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Linux 101 Hacks eBook Password: linux-is-wonderful

Unix Stat Command: How To Identify File Attributes

Ramesh Natarajan — Fri, 10 Jul 2009 07:01:25 +0000

Question: How do I find out all the available file attributes. i.e I would like to know more about a file or directory than what the ls -l command displays. Answer: Everything in Unix is treated as files. This includes devices, directories and sockets — all of these are files. Stat command displays file or filesystem [...]

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Linux 101 Hacks eBook Password: linux-is-wonderful

Google Chrome OS – Beginning of End of Microsoft?

Ramesh Natarajan — Thu, 09 Jul 2009 06:58:30 +0000

Google announced open source lightweight OS that is initially targeted towards netbooks. This is expected to be released in the 2nd half of 2010. Speed, simplicity and security are the key aspects of Google Chrome OS. We’re designing the OS to be fast and lightweight, to start up and get you onto the web in a [...]

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Linux 101 Hacks eBook Password: linux-is-wonderful

How To Generate SSL Key, CSR and Self Signed Certificate For Apache

Ramesh Natarajan — Wed, 08 Jul 2009 14:01:40 +0000

If you want to convert your website from HTTP to HTTPS, you need to get a SSL certificate from a valid organization like Verisign or Thawte. You can also generate self signed SSL certificate for testing purpose. In this article, let us review how to generate private key file (server.key), certificate signing request file (server.csr) [...]

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Linux 101 Hacks eBook Password: linux-is-wonderful

Blog Makeover: New Thesis Theme In Action

Ramesh Natarajan — Mon, 06 Jul 2009 06:02:17 +0000

The Geek Stuff gets a little face lift with the help of thesis theme. Following are some of the changes done: New G Logo. Better readability. Faster loading. Removed Ads inside content. Please browse around the site and leave a comment with your feedback and suggestion on this new layout. For bloggers who are interested in how I’ve done the customization [...]

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Linux 101 Hacks eBook Password: linux-is-wonderful

Crontab Issue: Cron Job is Not Working When Using Percentage

SathiyaMoorthy — Fri, 03 Jul 2009 15:03:38 +0000

Question: What is the reason my cron job does not gets executed when i use percentage ‘%’ in my cron job. How to solve this issue ? Answer:‘%’ is the new line specifier in cron command. Thus when you use % it is interpreted as a new line in the cron job. Let us see how [...]

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Linux 101 Hacks eBook Password: linux-is-wonderful

Top 5 Best Linux Text Editors

Ramesh Natarajan — Wed, 01 Jul 2009 15:03:08 +0000

As part of the contest that was conducted a while back, I got around 200 responses from the geeky readers who choose their favorite Linux text editor. Based on this data, the top spot in the best Linux text editor goes to… Vi / Vim Editor Vim won by a huge margin and I don’t think this is [...]

Daddy, I found it!, 15 Awesome Linux Find Command Examples (Part2)

SathiyaMoorthy — Mon, 29 Jun 2009 15:03:34 +0000

A while back we reviewed 15 practical find command examples (Part I). Find command can do lot more than just searching for files based on name. In this article (Part 2), let us discuss 15 advanced examples of find command including — finding files based on the time it is accessed, modified or changed, finding files [...]

5 Practical Examples To Delete / Remove Directory in Linux

Ramesh Natarajan — Fri, 26 Jun 2009 15:03:04 +0000

Question: How can I delete empty directory, directory with files and sub directories in Linux / Unix ? Also, how can I use an alias effectively for rm and rmdir command? Answer: You can delete empty directory using rmdir command, or directory with content using rm command. Deletion can be done interactively, recursively, forcefully, or through [...]

How To Identify Major and Minor Number For Block Devices in Unix

Ramesh Natarajan — Fri, 26 Jun 2009 15:00:26 +0000

Question: How do I find out the major and minor number of my block device / partition / mount points / SAN disk / filesystem? Why do you need to know major and minor device number? Sometimes you may need to know the major and minor number of devices for various reasons. For example, sar utility [...]