Login or Register to Ask a Question and Join Our Community

Sponsored Content
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
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Finding longest common substring among filenames

I will be performing a task on several directories, each containing a large number of files (2500+) that follow a regular naming convention: YYYY_MM_DD_XX.foo_bar.A.B.some_different_stuff.EXT What I would like to do is automatically discover the part of the filenames that are common to all... (1 Reply)
Discussion started by: cmcnorgan
1 Replies

2. Shell Programming and Scripting

Advanced AWK Regexp substring to int & Replace

Hi! I have a difficult problem, to step up a unknown version number in a text file, and save the file. It would be great to run script.sh and the version gets increased. Example the content of the textfile.txt hello version = x bye This include three steps 1. First find the char after... (2 Replies)
Discussion started by: Beachboy72
2 Replies

3. Shell Programming and Scripting

Awk Search text string in field, not all in field.

Hello, I am using awk to match text in a tab separated field and am able to do so when matching the exact word. My problem is that I would like to match any sequence of text in the tab-separated field without having to match it all. Any help will be appreciated. Please see the code below. awk... (3 Replies)
Discussion started by: rocket_dog
3 Replies

4. Shell Programming and Scripting

sed or awk command to replace a string pattern with another string based on position of this string

here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb cat dump.sql INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10... (10 Replies)
Discussion started by: vivek d r
10 Replies

5. Shell Programming and Scripting

awk uniq and longest string of a column as index

I met a challenge to filter ~70 millions of sequence rows and I want using awk with conditions: 1) longest string of each pattern in column 2, ignore any sub-string, as the index; 2) all the unique patterns after 1); 3) print the whole row; input: 1 ABCDEFGHI longest_sequence1 2 ABCDEFGH... (12 Replies)
Discussion started by: yifangt
12 Replies

6. UNIX for Dummies Questions & Answers

Values with common field in same line with awk

Hi all ! I almost did it but got a small problem. input: cars red cars blue cars green truck black Wanted: cars red-blue-green truck black Attempt: gawk 'BEGIN{FS="\t"}{a = a (a?"-":"")$2; $2=a; print $1 FS $2}' input But I also got the intermediate records... (2 Replies)
Discussion started by: beca123456
2 Replies

7. Shell Programming and Scripting

Parsing the longest match substring

Hello gurus, I have a database of possible primary signal strings pp22 pt22dx pp22dx jty2234 Also I have a list of scrambled signals which has a shorter string and a longer string separated by // (double slash ). Always the shorter string of a scrambled signal will have the primary... (6 Replies)
Discussion started by: senhia83
6 Replies

8. Shell Programming and Scripting

awk to update field using matching value in file1 and substring in field in file2

In the awk below I am trying to set/update the value of $14 in file2 in bold, using the matching NM_ in $12 or $9 in file2 with the NM_ in $2 of file1. The lengths of $9 and $12 can be variable but what is consistent is the start pattern will always be NM_ and the end pattern is always ;... (2 Replies)
Discussion started by: cmccabe
2 Replies

9. UNIX for Beginners Questions & Answers

Awk: output lines with common field to separate files

Hi, A beginner one. my input.tab (tab-separated): h1 h2 h3 h4 h5 item1 grpA 2 3 customer1 item2 grpB 4 6 customer1 item3 grpA 5 9 customer1 item4 grpA 0 0 customer2 item5 grpA 9 1 customer2 objective: output a file for each customer ($5) with the item number ($1) only if $2 matches... (2 Replies)
Discussion started by: beca123456
2 Replies

10. Shell Programming and Scripting

Replace substring from a string variable

Hi, Wish to remove "DR-" from the string variable (var). var="DR-SERVER1" var=`echo $var | sed -e 's/DR-//g'` echo "$var" Expected Output: However, I get the below error: Can you please suggest. (4 Replies)
Discussion started by: mohtashims
4 Replies

LEARN ABOUT CENTOS

glgetobjectptrlabel

GLGETOBJECTPTRLABEL(3G) 					   OpenGL Manual					   GLGETOBJECTPTRLABEL(3G)

NAME

       glGetObjectPtrLabel - retrieve the label of a sync object identified by a pointer

C SPECIFICATION

       void glGetObjectPtrLabel(void * ptr, GLsizei bifSize, GLsizei * length, char * label);

PARAMETERS

       ptr
	   The name of the sync object whose label to retrieve.

       bufSize
	   The length of the buffer whose address is in label.

       length
	   The address of a variable to receive the length of the object label.

       label
	   The address of a string that will receive the object label.

DESCRIPTION

       glGetObjectPtrLabel retrieves the label of the sync object identified by ptr.

       label is the address of a string that will be used to store the object label.  bufSize specifies the number of characters in the array
       identified by label.  length contains the address of a variable which will receive the the number of characters in the object label. If
       length is NULL, then it is ignored and no data is written. Likewise, if label is NULL, or if bufSize is zero then no data is written to
       label.

ERRORS

       GL_INVALID_ENUM is generated if identifier is not one of the accepted object types.

       GL_INVALID_VALUE is generated if ptr is not the name of an existing sync object.

       GL_INVALID_VALUE is generated if bufSize is zero.

       If not NULL, length and label should be addresses to which the client has write access, otherwise undefined behavior, including process
       termination may occur.

ASSOCIATED GETS

       glGet() with argument GL_MAX_LABEL_LENGTH.

SEE ALSO

       glPushDebugGroup(), glPopDebugGroup(), glObjectLabel(), glGetObjectLabel().

COPYRIGHT

       Copyright (C) 2012 Khronos Group. 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						   GLGETOBJECTPTRLABEL(3G)
All times are GMT -4. The time now is 10:52 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy