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Full Discussion: Help to optimize script running time
Homework and Emergencies Emergency UNIX and Linux Support Help to optimize script running time Post 302469147 by Corona688 on Thursday 4th of November 2010 10:09:04 PM
Old 11-04-2010
With an awk script that long it's hard to tell what you're doing.

If all you really want to do is count uses of the first column:

Code:
BEGIN { FS=";" }

{        if(length($0) > 0)
                count[$1]++;
}

END {
        for(keys in count)
                print keys ":" count[keys];
}

For your input data, this prints:
Code:
Zain500Disc:1
ZainEazy:1
ZainQuattro:1
Jaishana:1

---------- Post updated at 08:09 PM ---------- Previous update was at 07:48 PM ----------

It's hard to "optimize" huge amounts of logic since the slowdown may not be in one important place but in the logic itself. "optimizing" it means pretty much replacing it. Here I would use sort:

Code:
BEGIN { FS=";" ; count=1 ; cur=""; }

{
        if(length($0) > 0)
        {
                if(cur == $1)   count++;
                else
                {
                        if(length(cur) > 0)
                                print cur " had " count "\n";

                        cur=$1;         count=1;
                }

                print $0;
        }
}

END {   if(length(cur) > 0)     print cur " had " count "\n";   }

Code:
sort < input | awk -f count.awk

That way, you get your records already grouped and just have to count when things change.
 

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LEARN ABOUT CENTOS

glshadersource

GLSHADERSOURCE(3G)						   OpenGL Manual						GLSHADERSOURCE(3G)

NAME

       glShaderSource - Replaces the source code in a shader object

C SPECIFICATION

       void glShaderSource(GLuint shader, GLsizei count, const GLchar **string, const GLint *length);

PARAMETERS

       shader
	   Specifies the handle of the shader object whose source code is to be replaced.

       count
	   Specifies the number of elements in the string and length arrays.

       string
	   Specifies an array of pointers to strings containing the source code to be loaded into the shader.

       length
	   Specifies an array of string lengths.

DESCRIPTION

       glShaderSource sets the source code in shader to the source code in the array of strings specified by string. Any source code previously
       stored in the shader object is completely replaced. The number of strings in the array is specified by count. If length is NULL, each
       string is assumed to be null terminated. If length is a value other than NULL, it points to an array containing a string length for each of
       the corresponding elements of string. Each element in the length array may contain the length of the corresponding string (the null
       character is not counted as part of the string length) or a value less than 0 to indicate that the string is null terminated. The source
       code strings are not scanned or parsed at this time; they are simply copied into the specified shader object.

NOTES

       OpenGL copies the shader source code strings when glShaderSource is called, so an application may free its copy of the source code strings
       immediately after the function returns.

ERRORS

       GL_INVALID_VALUE is generated if shader is not a value generated by OpenGL.

       GL_INVALID_OPERATION is generated if shader is not a shader object.

       GL_INVALID_VALUE is generated if count is less than 0.

ASSOCIATED GETS

       glGetShader() with arguments shader and GL_SHADER_SOURCE_LENGTH

       glGetShaderSource() with argument shader

       glIsShader()

SEE ALSO

       glCompileShader(), glCreateShader(), glDeleteShader()

COPYRIGHT

       Copyright (C) 2003-2005 3Dlabs Inc. Ltd. This material may be distributed subject to the terms and conditions set forth in the Open
       Publication License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014							GLSHADERSOURCE(3G)
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