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
LASTLOGIN(8)						    BSD System Manager's Manual 					      LASTLOGIN(8)

NAME
lastlogin -- indicate last login time of users SYNOPSIS
lastlogin [-nrt] [-f filename] [-H hostsize] [-L linesize] [-N namesize] [user ...] DESCRIPTION
lastlogin will list the last login session of specified users, or for all users by default. Each line of output contains the user name, the tty from which the session was conducted, any hostname, and the start time for the session. If multiple users are given, the session information for each user is printed in the order given on the command line. Otherwise, information for all users is printed, sorted by uid. lastlogin differs from last(1) in that it only prints information regarding the very last login session. The last login database is never turned over or deleted in standard usage. The following options are available: -f filename Process input from filename. If the file ends with an ``x'', then it is assumed that it is a lastlogx(5) file, else it is assumed to be a lastlog(5) file. -H hostlen Set the field width for host output to hostlen characters. -L linelen Set the field width for line output to linelen characters. -N namelen Set the field width for name output to namelen characters. -n Attempt to print numeric host addresses. This option is only supported with lastlogx(5) format files. -r Reverse the order of the sort. -t Sort by last login time (most recent first.) FILES
/var/log/lastlogx default last login database /var/log/lastlog compatibility last login database EXAMPLES
lastlogin looks by default to the /var/log/lastlogx database, where some old programs that are not utmpx(5) aware might only write to /var/log/lastlog. To look at the old database one can use: lastlogin -f /var/log/lastlog SEE ALSO
last(1), lastlog(5), lastlogx(5), ac(8) AUTHORS
John M. Vinopal wrote this program in January 1996 and contributed it to the NetBSD project. BSD
March 4, 2005 BSD
All times are GMT -4. The time now is 06:48 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy