[SOLVED] print consecutive lines having same value after matching the string

AnirudhSingh · 07-23-2017, 06:02 AM

Hi All,

I have a file with below mentioned data

Sat Jul 22 03:04:00 2017 None
Sat Jul 22 03:05:00 2017 None
Sat Jul 22 03:06:00 2017 None
Sat Jul 22 03:07:00 2017 None
Sat Jul 22 03:08:00 2017 100.000000
Sat Jul 22 03:09:00 2017 100.000000
Sat Jul 22 03:10:00 2017 100.000000
Sat Jul 22 03:11:00 2017 100.000000
Sat Jul 22 03:12:00 2017 100.000000
Sat Jul 22 03:13:00 2017 100.000000
Sat Jul 22 03:14:00 2017 100.000000
I need to match and print value "None" if it occurs consecutively 5 time in a file

wpeckham · 07-23-2017, 06:16 AM

Thank you for sharing that information. Did you have some question or problem related to this information?

allend · 07-23-2017, 08:46 AM

Code:

 n=0; while read _ _ _ _ _ a; do [[ $a == "None" ]] && ((n=n+1)) || n=0; ((n==5)) && echo "$a"; done < data.txt

onebuck · 07-23-2017, 10:38 AM

Hi,

Welcome to LQ!

I suggest that you first read; http://www.linuxquestions.org/questi...#faq_lqwelcome so you will have an idea as to how to create a informational request for a post/thread.

So you have shown us your need! What is your deed?
We will aid you when you help yourself to a solution. Provide us with what you have attempted and then maybe someone will be able to assist.

Hope this helps.
Have fun & enjoy!

!!! · 07-23-2017, 03:12 PM

Hi AnirudhSingh. I see you came back 36 minutes before #4 welcomed you to LQ (so do I; I like puzzles!) and gifted you guidance on how to use LQ. Was the bash solution you saw in #3 what you wanted? Or are you using another language, like perl? An idea I had, was for you to write, in language-independent 'pseudo-code' (basically English), how a human would do it, to show your thoughts on an algorithm.

A minor detail: after your program reports a 5th "None", *IF* the subsequent=following input line also had None, did you want your program to:
a) have already exited
b) keep reporting=printing "None", until an input line doesn't end with that, or
c) wait for another group of 5 ? Thus, *IF* your input data contained exactly=only 10 consecutive matches='hits', would you want your program to print=report "None" 1, 6, or 2 times? "Bug"?

What new members of this nice community ideally do, in the Intro Forum, is first share a little about their distro, PC, and Linux experience/goals/interest. Are you taking a class? Do you enjoy researching thngs on the web (as I do!!!) ?

Anyway, I hope to hear back from you. Study well