LinuxQuestions.org - Blog Entries

File conversion script

Posted 12-29-2012 at 10:04 AM by Snark1994
Updated 12-29-2012 at 10:10 AM by Snark1994

A handy script I put together to automatically convert between file formats based on file extension, in an easily extensible manner:

Code:

#!/usr/bin/env bash

#Conversion rules:
# commands["extension_from extension_to"]="convert_command"
# INFILE and OUTFILE in the conversion command are replaced
# with the appropriate filenames

declare -A commands
commands["wav mp3"]="ffmpeg -i INFILE OUTFILE"

...

Snark1994

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Quick and dirty plotting with Haskell + Gnuplot

Posted 12-28-2012 at 05:13 PM by hydraMax (Bits and Pixels)
Updated 12-28-2012 at 05:17 PM by hydraMax

Tags haskell

Assuming you are a Haskeller, you can get a simply x-y plot up very quickly with the gnuplot interface module. This is useful for getting a rough graphical view of some function. Simply...

1. install Gnuplot (through your package manager)
2. cabal install gnuplot
3. use ghci:

Code:

$ ghci
GHCi, version 7.4.1: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ...

...

Attached Images

image3023.png (29.8 KB, 3 views)

hydraMax

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Dorito Thief Strikes Again!

Posted 12-27-2012 at 11:25 PM by hydraMax (Bits and Pixels)

Tags humor

http://youtu.be/Kqy9hxhUxK0

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New-Make And MC2, Meet MPG123 (terminal app to play MP3 and other file formats)

Posted 12-25-2012 at 08:11 PM by rainbowsally
Updated 08-06-2014 at 08:47 AM by rainbowsally (wrong acronym for alsa)

Tags assembler, c/c++, computer mad science, make compiling

After that last rant about screwy software, I found some GREAT software. mpg123 is outstanding.

Today's Features

Me eating my words, even about assembler coding. ;-)

Famous last words galore! I even have to eat my words about asm. In fact this app is so cool I had to add the ability to compile asm and C sources in the same directory to the mc2 code.

MPG123 (sandboxed relocatable binary installation OR compile from code, modify, experiment, etc.) is linked...

rainbowsally

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Hashing for ID generation (hash32_enum algorithm and ASM)

Posted 12-24-2012 at 10:45 AM by rainbowsally

You're not going to get fool-proof uniqueness from a 32 bit hash, but this one gets pretty close.

[cont'd from previous blog entry where the C/C++ version can be seen (and tested). http://www.linuxquestions.org/questi...-lists-35223/]

If you're curious about what the hash32_enum thing in the previous blog entry would look like in assembler, this is the output using the --save-temps gcc flag.

Code:

...

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