Key bindings for screen command

2010-06-01 3 min read Linux

Key bindings

screen commands consist of a command character (Ctrl-a by default) followed by another character. For many of the commands, you can also specify the character as Ctrl-character–e.g., Ctrl-a Ctrl-d as well as Ctrl-a d. The default key bindings are listed here. You can change the bindings for yourself in the $HOME/.screenrc configuration file, or for all users in /etc/screenrc. The term in parentheses that follows the description is the equivalent configuration-file command for changing the key binding.

gdialog on F11 – Leonidas

2010-06-01 1 min read Fedora

If you are using some old application or want to install some application that was developed quite some time back with GTK GUI, then you may find the application using gdialog. gdialog is no more available and is deprecated in Fedora and same functionality is provided by zenity. But the options to call zenity are slightly different so what do you do. I did a google search and found the following script. The credit of script is not mine and credit goes to ”Mike Newman mikegtn@gnome.org”

Deleting lines from the text file

2010-06-01 1 min read Linux

Really useful for pretty big <a class="zem_slink freebase/en/computer_file" title="Computer file" rel="wikipedia" href="http://en.wikipedia.org/wiki/Computer_file">files.

<a class="zem_slink freebase/en/sed" title="Sed" rel="wikipedia" href="http://en.wikipedia.org/wiki/Sed">sed –silent ’1,100 d’ <a class="zem_slink freebase/en/filename" title="Filename" rel="wikipedia" href="http://en.wikipedia.org/wiki/Filename">filename

here the command will delete the first 100 lines. You can specify whatever range you want. This will not delete the lines from the file but only display the contents on the console after deleting the 100 lines from begining.

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Google\’s RE2 regular expression library

2010-05-30 0 min read Bash

$\"Image$: Image via CrunchBase

<a class="zem_slink freebase/en/google" title="Google" rel="homepage" href="http://google.com">Google has announced the release of its RE2 library under a BSDish license. ”At Google, we use <a class="zem_slink freebase/en/regular_expression" title="Regular expression" rel="wikipedia" href="http://en.wikipedia.org/wiki/Regular_expression">regular expressions as part of the interface to many external and internal systems, including Code Search, <a class="zem_slink freebase/en/sawzall" title="Sawzall (programming language)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Sawzall_%28programming_language%29">Sawzall, and <a class="zem_slink" title="Bigtable" rel="homepage" href="http://labs.google.com/papers/bigtable.html">Bigtable. Those systems process large amounts of <a class="zem_slink freebase/en/data" title="Data" rel="wikipedia" href="http://en.wikipedia.org/wiki/Data">data; exponential <a class="zem_slink freebase/en/runtime" title="Run time (computing)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Run_time_%28computing%29">run time would be a serious problem. On a more practical note, these are <a class="zem_slink freebase/en/thread" title="Thread (computer science)" rel="wikipedia" href="http://en.wikipedia.org/wiki/Thread_%28computer_science%29">multithreaded <a class="zem_slink freebase/en/cplusplus" title="C++" rel="wikipedia" href="http://en.wikipedia.org/wiki/C%2B%2B">C++ programs with fixed-size stacks: the unbounded stack usage in typical regular expression implementations leads to stack overflows and server crashes. To solve both problems, we’ve built a new regular expression engine, called RE2, which is based on <a class="zem_slink freebase/en/automata_theory" title="Automata theory" rel="wikipedia" href="http://en.wikipedia.org/wiki/Automata_theory">automata theory and guarantees that searches complete in <a class="zem_slink freebase/en/linear_time" title="Linear time" rel="wikipedia" href="http://en.wikipedia.org/wiki/Linear_time">linear time with respect to the size of the input and in a fixed amount of stack space.” More information can be found on the <a href="http://code.google.com/p/re2/" target="_blank">RE2 project page.<h6 class="zemanta-related-title">Related articles by Zemanta <ul class="zemanta-article-ul"> <li class="zemanta-article-ul-li"><a href="http://glinden.blogspot.com/2010/03/gfs-and-its-evolution.html">GFS and its evolution (glinden.blogspot.com) <li class="zemanta-article-ul-li"><a href="http://research.swtch.com/2010/03/regular-expression-article-3.html">Regular Expression Article #3 (research.swtch.com) <div class="zemanta-pixie"><a class="zemanta-pixie-a" title="Reblog this post [with Zemanta]" href="http://reblog.zemanta.com/zemified/456fa268-f416-4aec-ae05-4d1a9c9c2712/"><img class="zemanta-pixie-img" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/reblog_b65.png" alt="Reblog this post [with Zemanta]" /><span class="zem-script more-related more-info pretty-attribution paragraph-reblog">

cairo-dock themes on server – download to local machine.

2010-05-30 1 min read Linux

I was trying to get all the cairo-themes locally. One because sometimes the internet connection is slow and second for the fun of it. So I did the first thing that can be done, to search the internet and find out how to do it. Could not find anything in the results and thus started to search how to to it. And here it is finally:

Get the list of themes <a href="http://themes.cairo-dock.org/liste.txt" target="_blank">here. Once this is done, simply go to http://themes.cairo-dock.org/ and download the file. Once this is done you can untar it to /usr/share/cairo-dock/themes and you are done.

Busy

2010-05-30 1 min read Uncategorized

I am busy finding a good photo to submit on one of the photography contest. Once I have finalized the Photo, will post the details and the photos here :). Probably tomorrow. Till then so long.

UFRaw – Open open format raw images in Linux.

2010-05-27 1 min read Fedora Linux Photo

<a class="zem_slink freebase/en/ufraw" title="UFRaw" rel="homepage" href="http://ufraw.sourceforge.net/">UFRaw is quite an essential program if you are using <a class="zem_slink freebase/en/linux" title="Linux" rel="wikipedia" href="http://en.wikipedia.org/wiki/Linux">Linux and have a camera that supports <a class="zem_slink freebase/en/raw_image_format" title="Raw image format" rel="wikipedia" href="http://en.wikipedia.org/wiki/Raw_image_format">raw format.

UFRaw is a tool for opening raw format images of <a class="zem_slink freebase/en/digital_camera" title="Digital camera" rel="wikipedia" href="http://en.wikipedia.org/wiki/Digital_camera">digital cameras.

UFRaw supports a long list of camera’s. You can see the list of supported camera’s <a href="http://ufraw.sourceforge.net/Cameras.html">here.