Sponsored Content
Top Forums Shell Programming and Scripting awk to print exact field number Post 302380055 by vidyadhar85 on Monday 14th of December 2009 04:59:19 AM
Old 12-14-2009
Quote:
Originally Posted by covis
if i dont it prints the number that i have given ... not the first and the second field for example but the number 1 and 2.
sorry my mistake... use this..
Code:
awk -v var="2 5 7" '{split(var,a," ")
for(i=1;i<=(length(var)+1)/2);i++){printf $(a[i])"\t"}{printf "\n"}}' filename


Last edited by vidyadhar85; 12-14-2009 at 07:13 AM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

use awk to aggregrate the field number

Hi, I have a various files;each filled with hundreds of line with similar number of fields. I would like to extract out field $5 from each of this file and aggregate them before printing out to a file. I tried to :- #!/usr/bin/awk -f file="file1.txt file2.txt file3.txt file4.txt" ... (1 Reply)
Discussion started by: ahjiefreak
1 Replies

2. Shell Programming and Scripting

Print matching field using awk

Hi All, I have a string like below: str="Hold=True Map=False 'This will map the data' Run=Yes Modify=False" I want to print the field Run=Yes and retrive the value "Yes". I cannot use simple awk command because the position of the "Run" will be different at different times. Is there a way... (6 Replies)
Discussion started by: deepakgang
6 Replies

3. UNIX for Dummies Questions & Answers

[awk] print from field n to field x

Hi, I'm trying to print every line from first field to the fourth from a file containing more. $ cat input a b c d e f g a b c d e f gI'm trying awk '{for (i=1; i <= NF-3; i++) print $i}' awkTest.datbut it printsa b c d a b c dSo, I easily guess I'm wrong. :) Of course, I want:a b... (5 Replies)
Discussion started by: daPeach
5 Replies

4. UNIX for Advanced & Expert Users

Awk command to print the field

894344202808090;11122;040320 075858 166;101;0;0;10u;0;NA;65;221890;2;101973;185059;568674;Y; PRE;0;0;NA;NA;0;NA;0;NA;textmsg;textmsg_snd1;telusmob;TEXTMSG1;0.15000000;126037;2010/03/04 12:58:57gmt;0;70532192; plz tell me any awk command which on the basis of the yellow field which is... (1 Reply)
Discussion started by: madfox
1 Replies

5. Shell Programming and Scripting

awk - print all fields except for last field

How do I print all the fields of a record except for the $(NF) field? (4 Replies)
Discussion started by: locoroco
4 Replies

6. Shell Programming and Scripting

AWK print number of records, divide this number

I would like to print the number of records of 2 files, and divide the two numbers awk '{print NR}' file1 > output1 awk '{print NR}' file2 > output2 paste output1 output2 > output awl '{print $1/$2}' output > output_2 is there a faster way? (8 Replies)
Discussion started by: programmerc
8 Replies

7. UNIX for Dummies Questions & Answers

Print first field in awk

Hi, I have below text file 01.02.2014,asdas,arse,aere,4tfsd 12.03.2014,sdte,45gf,8iuj,qw343w 01.02.0214,aetre,sdfgter,asfrwe I have writen below code to print only first field that is only date field from text file #!/bin/ksh echo "enter week" read week while read -r... (6 Replies)
Discussion started by: stew
6 Replies

8. UNIX for Dummies Questions & Answers

Print first field using awk

I want to print line by line only the first field from txt file input file etr,t7tu,e45xdt,e45exgt,cdgfe aqw34aw,45edgf,45estd,sert34 a232e,4etedf,w345er,qw345rw, qw354,q34asf,tw45f,q3drsf required o/p file etr aqw34aw a232e qw354 (1 Reply)
Discussion started by: stew
1 Replies

9. Shell Programming and Scripting

awk to find number in a field then print the line and the number

Hi I want to use awk to match where field 3 contains a number within string - then print the line and just the number as a new field. The source file is pipe delimited and looks something like 1|net|ABC Letr1|1530||| 1|net|EXP_1040 ABC|1121||| 1|net|EXP_TG1224|1122||| 1|net|R_North|1123|||... (5 Replies)
Discussion started by: Mudshark
5 Replies

10. Shell Programming and Scripting

awk sum of all columns needs to print exact amount

Hi I have attached txt file as input, and i'm able to calculate sum of columns at the end but the format of sum is not coming up right. awk -F"," '{for (i=4;i<=NF;i++) sum+=$i}{print}; END { sum="Total:"; for (i=1;i<=NF;i++) {printf sum ","} print "\n"}' input.txt check the o/p file, at... (6 Replies)
Discussion started by: manas_ranjan
6 Replies
read(1) 						      General Commands Manual							   read(1)

NAME
read - read a line from standard input SYNOPSIS
var ... DESCRIPTION
reads a single line from standard input. The line is split into fields as when processed by the shell (refer to shells in the first field is assigned to the first variable var, the second field to the second variable var, and so forth. If there are more fields than there are specified var operands, the remaining fields and their intervening separators are assigned to the last var. If there are more vars than fields, the remaining vars are set to empty strings. The setting of variables specified by the var operands affect the current shell execution environment. Standard input to can be redirected from a text file. Since affects the current shell execution environment, it is usually provided as a normal shell special (built-in) command. Thus, if it is called in a subshell or separate utility execution environment similar to the following, it does not affect the shell variables in the caller's environment: Options recognizes the following options: Do not treat a backslash character in any special way. Consider each backslash to be part of the input line. Opperands recognizes the following operands: var The name of an existing or nonexisting shell variable. EXTERNAL INFLUENCES
Environment Variables determines the internal field separators used to delimit fields. RETURN VALUE
exits with one of the following values: 0 Successful completion. >0 End-of-file was detected or an error occurred. EXAMPLES
Print a file with the first field of each line moved to the end of the line. while read -r xx yy do printf "%s %s " "$yy" "$xx" done < input_file SEE ALSO
csh(1), ksh(1), sh(1), sh-posix(1). STANDARDS CONFORMANCE
read(1)
All times are GMT -4. The time now is 07:23 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy