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Full Discussion: Replace substring by longest string in common field (awk)
Top Forums UNIX for Beginners Questions & Answers Replace substring by longest string in common field (awk) Post 303042959 by RavinderSingh13 on Tuesday 14th of January 2020 06:07:29 AM
Old 01-14-2020
Hello beca123456,

Could you please try following.

Code:
awk 'BEGIN{FS=OFS="|"} FNR==NR{b[$1]=length($3)>a[$1]?$3:b[$1];a[$1]=length($3)>a[$1]?length($3):a[$1];next} length($3)<a[$1]{$3=b[$1]} 1'  Input_file  Input_file

A non-one liner form of solution is:
Code:
awk '
BEGIN{
  FS=OFS="|"
}
FNR==NR{
  b[$1]=length($3)>a[$1]?$3:b[$1]
  a[$1]=length($3)>a[$1]?length($3):a[$1]
  next
}
length($3)<a[$1]{
  $3=b[$1]
}
1
'   Input_file  Input_file

Output will be as follows.

Code:
name_10|A|BCCC|cat_1
name_11|B|DEEEEEE|cat_2
name_10|A|BCCC|cat_3
name_11|B|DEEEEEE|cat_4

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
beca123456
 

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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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