Sponsored Content
Full Discussion: awk Behavior
Top Forums UNIX for Beginners Questions & Answers awk Behavior Post 302978767 by Yoda on Wednesday 3rd of August 2016 11:54:14 AM
Old 08-03-2016
A BEGIN rule is executed once only, before the first input record is read. This is the reason why below code works as expected:-
Code:
awk 'BEGIN { FS = "," };{print $1}' dafile

But in this code, FS is set only when the first input record is read:-
Code:
awk '{FS="," }{print $1}' dafile

 

9 More Discussions You Might Find Interesting

1. Programming

ls behavior

I put this here because it is a 'behavior' type question.. I seem to remember doing ls .* and getting all the .-files, like .profile .login etc. But ls .* doesn't do that, it lsts the contents of every .*-type subdirectory. Is it supposed to? I should think that a -R should be given to... (10 Replies)
Discussion started by: AtleRamsli
10 Replies

2. Programming

Behavior of pthreads

Hi All, I ve written a small program to get started off with pthreads. I somehow feel the program doesnt meet the purpose. Please find the code and the output below. Please find my question at the bottom. #include <pthread.h> #include <stdio.h> #include <stdlib.h> void *PrintThread1(void... (4 Replies)
Discussion started by: nhrraj
4 Replies

3. Shell Programming and Scripting

sed behavior on hp-ux

the sed command: sed 's/^*//' file does not work on HP-UX :-( but it works fine on Linux, content of file: <tab><tab>hello output should be: hello Any ideas?? Thank you Andy (8 Replies)
Discussion started by: andy2000
8 Replies

4. Programming

Strange behavior in C++

I have the following program: int main(int argc, char** argv){ unsigned long int mean=0; for(int i=1;i<10;i++){ mean+=poisson(12); cout<<mean<<endl; } cout<<"Sum of poisson: "<< mean; return 0; } when I run it, I get the... (4 Replies)
Discussion started by: santiagorf
4 Replies

5. HP-UX

Unusual Behavior?

Our comp-operator has come across a peculiar ‘feature'. We have this directory where we save all the reports that were generated for a particular department for only one calendar year. Currently there are 45,869 files. When the operator tried to backup that drive it started to print a flie-listing... (3 Replies)
Discussion started by: vslewis
3 Replies

6. Shell Programming and Scripting

awk print behavior weird

Hi Experts I am facing a weird issue while using print statement in awk. I have a text file with 3 fields shown below: # cat f1 234,abc,1000 235,efg,2000 236,jih,3000 # When I print the third column alone, I dont face any issue as shown below: # awk '{print $3 }' FS=, f1 1000 2000... (5 Replies)
Discussion started by: guruprasadpr
5 Replies

7. AIX

LUN Behavior

Aix 6.1, working with a nim master and nim_altmaster both LPARS have access to the same data LUN, /nimdisk I do realize the risks of having 2 servers access the same LUN, however it serves the purpose of being able to restore mksysb's to/from our DR site if necessary, at least in theory ;) ... (3 Replies)
Discussion started by: mshilling
3 Replies

8. UNIX for Dummies Questions & Answers

Weird behavior of Vi

Hi there, I am a bit puzzled by a weird behavior of Vi. I very simply would like to add increased numbers in some files. Since I have many thousands entries per file and many files, I would like to macro it in vi. To do this, I enter the first number ("0001") on the first line and then yank... (4 Replies)
Discussion started by: hypsis
4 Replies

9. Shell Programming and Scripting

Explaination on Behavior of awk command

Hello Admin, Could you pls explain on the below behavior of the awk command. $ awk -F">20" "/Cyclomatic complexity/ && /;add;/{print \$1}" inspect_64d_369980 | awk '{print $NF}' | sort | tail -1 65 $var=`awk -F">20" "/Cyclomatic complexity/ && /;add;/{print \$1}" inspect_64d_369980 | awk... (3 Replies)
Discussion started by: chandana hs
3 Replies
ntptrace(1)						      General Commands Manual						       ntptrace(1)

NAME
ntptrace - trace a chain of NTP servers back to the primary source SYNOPSIS
ntptrace [ -vdn ] [ -r retries ] [ -t timeout ] [ server ] DESCRIPTION
ntptrace determines where a given Network Time Protocol (NTP) server gets its time from, and follows the chain of NTP servers back to their master time source. If given no arguments, it starts with localhost . Here is an example of the output from ntptrace : % ntptrace localhost: stratum 4, offset 0.0019529, synch distance 0.144135 server2ozo.com: stratum 2, offset 0.0124263, synch distance 0.115784 usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid On each line, the fields are (left to right): the host name, the host stratum, the time offset between that host and the local host (as measured by ntptrace ; this is why it is not always zero for " localhost "), the host synchronization distance, and (only for stratum-1 servers) the reference clock ID. All times are given in sec- onds. Note that the stratum is the server hop count to the primary source, while the synchronization distance is the estimated error rela- tive to the primary source. These terms are precisely defined in RFC-1305. OPTIONS
-d Turns on some debugging output. -n Turns off the printing of host names; instead, host IP addresses are given. This may be useful if a nameserver is down. -r retries Sets the number of retransmission attempts for each host (default = 5). -t timeout Sets the retransmission timeout (in seconds) (default = 2). -v Prints verbose information about the NTP servers. BUGS
This program makes no attempt to improve accuracy by doing multiple samples. SEE ALSO
More documentation is available in the package ntp-doc. AUTHOR
David L. Mills <mills@udel.edu> ntp 4.1.1b-r5 ntptrace(1)
All times are GMT -4. The time now is 07:36 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy