Sponsored Content
Top Forums Shell Programming and Scripting awk - treating remaining columns as one Post 302730969 by ctsgnb on Wednesday 14th of November 2012 03:11:09 AM
Old 11-14-2012
Quote:
Originally Posted by Scrutinizer
@cts. bala@ the difference occurs not because of awk versions but because you are using different different data samples. With bala's data sample this part of ctsgnb's code is problematic: sub(".*"$3,$3) , which matches upto the last occurence of "this", because of greedy matching..



--
@cts: nice sed/xargs
@bala: thanks Smilie

@Scruti

Ah ok ... i got it now (gush!, how did i miss it !) Smilie , thx !

By the way, in the code:

Code:
awk '{$1=$1; sub(FS,RS); sub(FS,RS)}1' infile

The $1=$1 is not necessary, is it ?

Last edited by ctsgnb; 11-14-2012 at 04:18 AM..
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

treating special chars

Hi, I need some advise on treating non printable chars over ascii value 126 Case 1 : On some fields in the text , I need to retiain then 'as-is' and load to a database.I understand it also depends on database codepage. but i just wanna know how do i ensure it do not change while loading... (1 Reply)
Discussion started by: braindrain
1 Replies

2. Shell Programming and Scripting

TRAP treating

Hi, I'm looking for a script that receives the traps from a windows machine and treate them. For exemple just write a line in a file on UNIX server. Can you help me ? Thank you. (2 Replies)
Discussion started by: big123456
2 Replies

3. Shell Programming and Scripting

Treating Strings with spaces

I have a file list.txt which has a list of file names with spaces between the file names like /emptydir/file 1 how do i browse through the list.txt displaying the filenames. Almost all the file names in list.txt have space between them.This file list.txt is formed by using the find statement to... (5 Replies)
Discussion started by: kinny
5 Replies

4. Shell Programming and Scripting

Treating string as date ?

Is there a way to treat a string as date and compare it to the current date? lets assum inpu lik $ cat myfile Name Last login ************************** Sara 2/13/2012 kalpeer 2/15/2012 ygemici 2/14/2012 we want to display the name who logged in during the last #... (4 Replies)
Discussion started by: Sara_84
4 Replies

5. Shell Programming and Scripting

treating multiple delimiters[solved]

Hi, I need to display the last column value in the below o/p. sam2 PS 03/10/11 0 441 Unable to get o/p with this awk code awk -F"+" '{ print $4 }' pwdchk.txt I need to display 441(in this eg.) and also accept it as a variable to treat it with if condition and take a decision.... (1 Reply)
Discussion started by: sam_bd
1 Replies

6. Shell Programming and Scripting

Comparison treating strings as zero integers

I'm trying to write a bash script to perform basic arithmetic operations but I want to run a comparison on the arguments first to check that they're a number greater than zero. I want an error to pop up if the arguments args aren't >= 0 so I have: if ! ]; then echo "bad number: $1" fi ... (14 Replies)
Discussion started by: TierAngst
14 Replies

7. Shell Programming and Scripting

awk treating variables differently in UNIX-Linux

Hi, awk seem to be acting differently in Unix and Linux when it comes to formatting. This is making it difficult to migrate scripts. for example: UNIX: echo "123" |awk '{printf ("%05s\n" ,$1)}' 00123 echo "123" |awk '{printf ("%05d\n" ,$1)}' 00123 echo "S12" |awk '{printf ("%05s\n"... (9 Replies)
Discussion started by: wanderingmind16
9 Replies

8. Shell Programming and Scripting

AIX to RHEL migration - awk treating 0e[0-9]+ as 0 instead of string issue

Greetings Experts, We are migrating from AIX to RHEL Linux. I have created a script to verify and report the NULLs and SPACEs in the key columns and duplicates on key combination of "|" delimited set of big files. Following is the code that was successfully running in AIX. awk -F "|" 'BEGIN {... (5 Replies)
Discussion started by: chill3chee
5 Replies

9. Shell Programming and Scripting

Awk: duplicate column and print remaining as is

Hello there I'd like to make a copy of 2nd column and have it printed in place of column 1. Remaining columns are needed as it. test data: ProbeSet GeneSymbol X22565285 X22566285 ILMN_1050008 MYOCD 6.577 7.395 ILMN_1050014 GPRC6A 6.595 6.668 ILMN_1050017 ... (2 Replies)
Discussion started by: genome
2 Replies
COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
All times are GMT -4. The time now is 04:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy