Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Awk doubt
Top Forums Shell Programming and Scripting Awk doubt Post 302383516 by royalibrahim on Wednesday 30th of December 2009 04:49:39 AM
Old 12-30-2009
Awk doubt
I have a file sample.txt with the following contents:

Quote:
trap is a software interrupt
usually the result of an error condition.

default action when a process receives a signal is to terminate.

user may press the interrupt key or send a kill command to the process

In UNIX, any of these events can cause a signal

the following gives output as
Code:
awk 'NF{s=$0; print s}' sample.txt

Quote:
trap is a software interrupt
usually the result of an error condition.
default action when a process receives a signal is to terminate.
user may press the interrupt key or send a kill command to the process
In UNIX, any of these events can cause a signal
but,
Code:
awk 'NF{s=$0}{print s}' sample.txt

gives output as
Quote:
trap is a software interrupt
usually the result of an error condition.
usually the result of an error condition.
default action when a process receives a signal is to terminate.
default action when a process receives a signal is to terminate.
user may press the interrupt key or send a kill command to the process
user may press the interrupt key or send a kill command to the process
In UNIX, any of these events can cause a signal
why this difference, can someone explain me?
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

awk doubt

I'm having a file with 5 fields. I want to sort that file according to one field no 3. How shall I do using awk programming. Any input appreciatable. regards, vadivel. (7 Replies)
Discussion started by: vadivel
7 Replies

2. Shell Programming and Scripting

doubt in AWK

Hi all, column1 -------- 33 44 55 66 please provide the script using awk command to dispaly output 55. Help apperciated.. thanks, Nirmal (4 Replies)
Discussion started by: abnirmal
4 Replies

3. Shell Programming and Scripting

awk doubt

hi how to get the values in two columns (may be 2nd and 5th column) of a file line by line. either i want to get the two fields into different variables and use a for loop to get these values line by line. (3 Replies)
Discussion started by: Pradee
3 Replies

4. UNIX for Dummies Questions & Answers

doubt about awk

i have a file like this: awk.lst smith : sales : 1200 : 2 jones:it:25000 : 2 roger : it : 1500 : 2 ravi | acct | 15000 i have 3 doubts 1) when i say awk -F ":" '$2 ~ /'it'/ {print $0}' awk.lst i am not able to get jones in the ouput , is it because of space issue? 2)how to... (2 Replies)
Discussion started by: soujanya_srk
2 Replies

5. Shell Programming and Scripting

AWK doubt

Hello people I have a doubt about awk... I´m using it to create a condition where I do not want to use the 0 (zero) value of a certain column. - This is the original file: string,number,date abc,0,20050101 def,1,20060101 ghi,2,20040101 jkl,12,20090101 mno,123,20020101... (2 Replies)
Discussion started by: Rafael.Buria
2 Replies

6. Shell Programming and Scripting

doubt in awk

Hi , I have a file in the below format: 1.txt awk 'BEGIN { printf ("%1s", "man" )} ' awk 'BEGIN { printf ("%9s", "women" )} ' awk 'BEGIN { printf ("%56s", "human")} ' ## ### ## echo "$!" ## awk 'BEGIN { printf ("%1s", "aaa" )} ' awk 'BEGIN { printf ("%19s", "bbb" )} ' ... (4 Replies)
Discussion started by: jisha
4 Replies

7. Shell Programming and Scripting

doubt on awk

I have executed the below command: find . -name "Ks*" -type f -exec ls -ltr {} \; | awk '{printf("%ld %s %d %s \n",$5,$6,$7,$8,$9)}' and here is the output: 1282 Oct 7 2004 51590 Jul 10 2006 921 Oct 7 2004 1389 Jun 4 2003 1037 May 19 2004 334 Mar 24 2004 672 Jul 8 2003 977... (6 Replies)
Discussion started by: venkatesht
6 Replies

8. UNIX for Dummies Questions & Answers

a doubt in awk

instead of writing print command in awk, i saw in some posts that we can simply write a number before we end the awk command and it will print the file. As given below: $awk '{some manipulation; print}' filename $awk '{some manipulation}1' filename I also tried replacing the... (2 Replies)
Discussion started by: PranavEcstasy
2 Replies

9. Shell Programming and Scripting

Doubt on using AWK

DE_CODE|1{AXXANY}1APP_NAME|2{TELCO}2LOC|NY DE_CODE|1{AXXATX}1APP_NAME|2{TELCO}2LOC|TX DE_CODE|1{AXXABT}1APP_NAME|2{TELCO}2LOC|BT DE_CODE|1{AXXANJ}1APP_NAME|2{TELCO}2LOC|NJ i have out put file like below i have to convert it in the format as below. DE_CODE = AXXANY APP_NAME= TELCO LOC = NY... (4 Replies)
Discussion started by: mail2sant
4 Replies

10. Shell Programming and Scripting

Doubt in awk

Hi, I got a below requirement from this forum, but the solution provided was not clear. Below is the requirement Input file A 1 Z A 1 ZZ B 2 Y B 2 AA Required output B Y|AA A Z|ZZ (5 Replies)
Discussion started by: stew
5 Replies

LEARN ABOUT NETBSD

kill

KILL(1) 						    BSD General Commands Manual 						   KILL(1)

NAME

     kill -- terminate or signal a process

SYNOPSIS

     kill [-s signal_name] pid ...
     kill -l [exit_status]
     kill -signal_name pid ...
     kill -signal_number pid ...

DESCRIPTION

     The kill utility sends a signal to the process(es) specified by the pid operand(s).

     Only the super-user may send signals to other users' processes.

     The options are as follows:

     -s signal_name
	     A symbolic signal name specifying the signal to be sent instead of the default TERM.

     -l [exit_status]
	     Display the name of the signal corresponding to exit_status.  exit_status may be the exit status of a command killed by a signal (see
	     the special sh(1) parameter '?') or a signal number.

	     If no operand is given, display the names of all the signals.

     -signal_name
	     A symbolic signal name specifying the signal to be sent instead of the default TERM.

     -signal_number
	     A non-negative decimal integer, specifying the signal to be sent instead of the default TERM.

     The following pids have special meanings:
     -1      If superuser, broadcast the signal to all processes; otherwise broadcast to all processes belonging to the user.
     0	     Broadcast the signal to all processes in the current process group belonging to the user.

     Some of the more commonly used signals:
     1	     HUP (hang up)
     2	     INT (interrupt)
     3	     QUIT (quit)
     6	     ABRT (abort)
     9	     KILL (non-catchable, non-ignorable kill)
     14      ALRM (alarm clock)
     15      TERM (software termination signal)

     kill is a built-in to csh(1); it allows job specifiers of the form ``%...'' as arguments so process id's are not as often used as kill argu-
     ments.  See csh(1) for details.

SEE ALSO

     csh(1), pgrep(1), pkill(1), ps(1), kill(2), sigaction(2), signal(7)

STANDARDS

     The kill function is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A kill command appeared in Version 6 AT&T UNIX.

BSD
								  April 28, 1995							       BSD
All times are GMT -4. The time now is 04:06 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy