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Full Discussion: Putting strings into positioning array in loop
Top Forums Shell Programming and Scripting Putting strings into positioning array in loop Post 303022292 by annacreek on Wednesday 29th of August 2018 10:03:36 AM
Old 08-29-2018
thanks, I'll try your approach .



I am still trying to understand how bash code is executed.
Perhaps my perception of code line executing "left to right" is basically wrong.



Look at line #277
Every "manual" I read about using "wc" states it "prints".

I do not need "print" - I need to process what I am used to call "function return value".
OK, I understand 'wc" "prints" most likely to some "stdxxx" - as output of "pipe" .
So how does lineCount value , being at the "front" of the pipe get assigned?
And why is the file to be analyzed at the "end" of the code line?



Code:
echo "$LINENO test for actual file contents" 
 277 lineCount=$(wc -l < "$PWD$DEBUG_DIR$DEBUG_MENU")
 278 echo "line count $lineCount"
 279 if [ lineCount = 0 ] 
 280 then
 281    echo "$LINENO File $DEBUG_MENU   empty "
 282    #build defaukt menu in file 
 283    defaultMenu
 284    pause 
 285 else 
 286     echo "$LINENO File $DEBUG_MENU   has data  "
 287     pause 
 288 fi

 

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LEARN ABOUT DEBIAN

glshadersource

GLSHADERSOURCE(3G)						  [FIXME: 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/.

[FIXME: source] 						    05/30/2012							GLSHADERSOURCE(3G)
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