Sponsored Content
Top Forums Shell Programming and Scripting awk to replace particular field Post 302324981 by VGR on Friday 12th of June 2009 10:49:37 AM
Old 06-12-2009
cool thanks man

hope im not bugging you too much......
but hey another twist to this Smilie

what if i had:
VenoM,Venom,am1
Venom,VENOM,ax2
nos,NOS,ba1
nos,N2O,gd2
nos,n2o,as3
..
.
.
.


In this case, how do i pick out the value in the second column after matching 2 variables ie the 1st and the 3rd column to my main data file [assuming that the 3rd column is present in the 3rd field of the data file]

Last edited by VGR; 06-12-2009 at 12:03 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk: find and replace in certain field only, help needed

I got a sample file like this. $ cat test 12|13|100|s 12|13|100|s 100|13|100|s 12|13|100|s I want to replace all 100 by 2000 only in 3rd field using "awk" This is replacing all 100's :-( $ awk -F "|" '{gsub( /100/,"2000");print}' test 12|13|2000|s 12|13|2000|s 2000|13|2000|s... (5 Replies)
Discussion started by: jkl_jkl
5 Replies

2. Shell Programming and Scripting

Awk to replace a field

Hi I am using awk to replace the 4th feild of the input line. My code is below: REP_LINE=$(echo $Line | awk -v var=$REPL_DT '{$4=var; print}') It does replaces but all words/phrases after the 4th feild are erased. Is there a way to modify the 4th feild of the input line and to have all... (7 Replies)
Discussion started by: sugan
7 Replies

3. Shell Programming and Scripting

awk search and replace field

I am writing a c++ program that has many calls of pow(input,2). I now realize that this is slowing down the program and these all should be input * input for greater speed. There should be a simple way of doing this replacement throughout my file with awk, but I am not very familiar with awk.... (2 Replies)
Discussion started by: bluejayek
2 Replies

4. Shell Programming and Scripting

awk how to replace specific field with new value

I need to replace specific field (x) in a table with new value (y): Input: 1 2 3 4 5 x 6 7 8 9 0 0 Output: 1 2 3 4 5 y 6 7 8 9 0 0 I have no idea how to do this. (10 Replies)
Discussion started by: setepo
10 Replies

5. Shell Programming and Scripting

AWK How to replace a field using 2 shell variables?

Hello everybody: I want to replace any field $2 of any file line (f.i. test.txt) matching $1 with a shell variable. $ cat test.txt F 0 B A H -12.33 Now I'm going to ask the value of variable B: $ SEARCHVAR=B $ OLDVAL=$(awk -v SEARCHVAR="$SEARCHVAR"... (4 Replies)
Discussion started by: basalt
4 Replies

6. Shell Programming and Scripting

awk search and replace in a targeted field instead of $0

Hi I would like to apply this gawk command: gawk '{$0=gensub(/\y+\y/,"","g"); print}' file not to the whole $0 but just to the part of $0 that is between: (a number)"> and </mrk> Is it possible? thanks for your help. (4 Replies)
Discussion started by: louisJ
4 Replies

7. Shell Programming and Scripting

AWK replace one field

I have some problem with this. Need to change field #3 to 5 if field #1 = A and filed #2 =B DataA C 6 T C B 4 R A B 3 T D E 5 4 I would like to do two things if statement is true, but can not get it to work. Here it prints column #3 if statement is true, and this works awk '{if... (3 Replies)
Discussion started by: Jotne
3 Replies

8. Shell Programming and Scripting

Need an awk script to calculate the percentage of value field and replace

Need an awk script to calculate the percentage of value field and replace I have a input file called file.txt with the following content: john|622.5674603562933|8|br:1;cn:3;fr:1;jp:1;us:2 andy|0.0|12|**:3;br:1;ca:2;de:2;dz:1;fr:2;nl:1 in fourth filed of input file, calulate percentage of each... (1 Reply)
Discussion started by: veeruasu
1 Replies

9. Shell Programming and Scripting

awk Match First Field and Replace Second Column

Hi Friends, I have looked around the forums and over online but couldn't figure out how to deal with this problem input.txt gene1,axis1/0/1,axis2/0/1 gene1,axis1/1/2,axis2/1/2 gene1,axis1/2/3,axis2/2/3 gene2,axis1/3/4,axis2/3/4 Match on first column and if first column is... (1 Reply)
Discussion started by: jacobs.smith
1 Replies

10. Shell Programming and Scripting

awk to replace a specific field in certain condition

Hi, I have a file like below PRUM,67016800 ,CC ,C1,67016800 , ,Y,Y,2 ,CK,BX,FOX ,00000001,EA,00000001,20141120 00:00:00, ,N,Y,Y,CK ABCDEF... (7 Replies)
Discussion started by: mady135
7 Replies
DB2_FIELD_NUM(3)							 1							  DB2_FIELD_NUM(3)

db2_field_num - Returns the position of the named column in a result set

SYNOPSIS
int db2_field_num (resource $stmt, mixed $column) DESCRIPTION
Returns the position of the named column in a result set. PARAMETERS
o $stmt - Specifies a statement resource containing a result set. o $column - Specifies the column in the result set. This can either be an integer representing the 0-indexed position of the column, or a string containing the name of the column. RETURN VALUES
Returns an integer containing the 0-indexed position of the named column in the result set. If the specified column does not exist in the result set, db2_field_num(3) returns FALSE. SEE ALSO
db2_field_display_size(3), db2_field_name(3), db2_field_precision(3), db2_field_scale(3), db2_field_type(3), db2_field_width(3). PHP Documentation Group DB2_FIELD_NUM(3)
All times are GMT -4. The time now is 01:21 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy