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Full Discussion: Selecting specific 'id's from lines and columns using 'SED' or 'AWK'
Top Forums Shell Programming and Scripting Selecting specific 'id's from lines and columns using 'SED' or 'AWK' Post 302461520 by kamskamu on Monday 11th of October 2010 01:06:45 PM
Old 10-11-2010
Hello rdcwayx,
Thank you so much for your help.
When I tried with my long sample (as in my earlier post), it gave the output like this:
12
16
24
28
This id-list is one id-number short of the actual id's that satisfy those 3 conditions. The correct id-list should be as follows:
13
17
25
29
I will try to modify your code slightly and see whether it works perfectly.

Thanks again,
Kamu

---------- Post updated at 12:28 PM ---------- Previous update was at 12:07 PM ----------

Hello rdcwayx,
When I did a minor change in your code (from {print NR-2} to {print NR-1}, it worked perfectly. Now, your code looks like this:

Code:
awk '{a[NR]=$3} a[NR-2]==20&&a[NR-1]==90&&a[NR]==40 {print NR-1}' infile

Do you agree with me..?
Thanks for your expert help.

Sincerely,
Kamu

---------- Post updated at 01:06 PM ---------- Previous update was at 12:28 PM ----------

Hello rdcwayx,
On a recount, when I tried your code with my data-file with column titles on the first line, it gives the correct line-id. With data alone (without header), I had to modify your code.
Code:
awk '{a[NR]=$3} a[NR-2]==20&&a[NR-1]==90&&a[NR]==40 {print NR-2}' infile

On the other hand, the code provided by 'Scrutinizer' (as below) worked even when the id-lines were jumbled up.
Code:
awk 'q==20&&p==90&&$3==40{print id}{id=$1;q=p;p=$3}' infile

Thank you so much both of you...again!

Kamu
 

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GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

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