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sed

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    This subchapter looks at sed, a Unix (and Linux) command.

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sed

    This subchapter looks at sed, a Unix (and Linux) command.

    sed is a command line editor.

fixing end of line

    Windows and DOS end every line with the old carriage return and line feed combination (\r\n). You cna use sed to convert Windows/DOS file format to UNIX file format:

    $ sed 's/.$//' filename

adding line numbers

    You can use sed to add line numbers to all of the non-empty lines in a file:

    $ sed '/./=' filename | sed 'N; s/\n/ /'

other

    On November 8, 2010, Ramesh Natarajan named this the number five (5) most frequently used Unix/Linux command at this web page 50 Most Frequently Used UNIX / Linux Commands (With Examples).

    In June 2009, Ken Milberg named this command as one of the Top 50 universal UNIX commands at this web page Top 50 Universal INIX commands. Note that this web page requires agreeing to be spammed before you can read it.

    “sed is for modifying the contents of files using editing commands, including regular expressions. The GNU Sed has many more capabilities than the traditional or POSIX versions of Sed.#148; —Jonathan Leffler

    “sed is the stream editor, inspired by ed the editor. It has a simple command set mostly limited to line-by-line editing. sed commands can easily by imitated in awk.” —ephemient


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free music player coding example

    Coding example: I am making heavily documented and explained open source code for a method to play music for free — almost any song, no subscription fees, no download costs, no advertisements, all completely legal. This is done by building a front-end to YouTube (which checks the copyright permissions for you).

    View music player in action: www.musicinpublic.com/.

    Create your own copy from the original source code/ (presented for learning programming).

This section is under the category of owning cirticism.

In response to a posting about my article collecting social media, Moderator +Andrew Smith (Technology addict, Web Developer, API guru, futsal and football wannabe, and all round nice guy!, Swordfox Design, arrowtown, new zealand) of the Google+ community Web Developers, Web Designers, Web Coding claims “Quite frankly this is self promotion, and your site is not of great quality. I can see how +Joost Schuur  would think this of not high enough a standard.”


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free book on Unix/Linux System Administration

Teach Yourself Unix/Linux System Administration and Shell Programming

free computer programming text book project

Building a free downloadable text book on computer programming for university, college, community college, and high school classes in computer programming.

If you like the idea of this project,
then please donate some money.

send donations to:
Milo
PO Box 1361
Tustin, California 92781

Supporting the entire project:

    If you have a business or organization that can support the entire cost of this project, please contact Pr Ntr Kmt (my church)

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Made with Macintosh

    This web site handcrafted on Macintosh computers using Tom Bender’s Tex-Edit Plus and served using FreeBSD .

Viewable With Any Browser


    †UNIX used as a generic term unless specifically used as a trademark (such as in the phrase “UNIX certified”). UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Ltd.

    Names and logos of various OSs are trademarks of their respective owners.

    Copyright © 2012 Milo

    Created: January 15, 2012

    Last Updated: January 15, 2012


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