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Top Forums Shell Programming and Scripting Calculation in Multiple files using awk Post 302443467 by rdcwayx on Monday 9th of August 2010 03:01:10 AM
Old 08-09-2010
In your sample files, there are some hide spaces (guess you typed them carelessly), that's why it makes a little complex in Christoph Spohr's code.

Below command should be simple, and maybe works with your real data files.
Code:
awk -F , '{a[$2 FS $3 FS $4]+=$1}END{for (i in a) print a[i],i}' sample*.csv

 

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load_sample(3alleg4)						  Allegro manual					      load_sample(3alleg4)

NAME
load_sample - Loads a sample from a file. Allegro game programming library. SYNOPSIS
#include <allegro.h> SAMPLE *load_sample(const char *filename); DESCRIPTION
Loads a sample from a file, supporting both mono and stereo WAV and mono VOC files, in 8 or 16-bit formats, as well as formats handled by functions registered using register_sample_file_type(). Example: SAMPLE *sample = load_sample(user_input); if (!sample) abort_on_error("Couldn't load sample!"); RETURN VALUE
Returns a pointer to the SAMPLE or NULL on error. Remember to free this sample later to avoid memory leaks. SEE ALSO
destroy_sample(3alleg4), load_voc(3alleg4), load_wav(3alleg4), play_sample(3alleg4), save_sample(3alleg4), register_sam- ple_file_type(3alleg4), exsample(3alleg4) Allegro version 4.4.2 load_sample(3alleg4)
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