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Full Discussion: Curious question? How to put a string into two columns.
Top Forums Shell Programming and Scripting Curious question? How to put a string into two columns. Post 302369001 by liuzhencc on Friday 6th of November 2009 07:34:30 AM
Old 11-06-2009
Quote:
Originally Posted by scottn
Code:
awk -F= '
  /.log/ && P { print "" }
  /.log/ { P=1 }
  /^HF/ { printf $2 " "; getline; print $2; P=0 }
' file1

-240.451527 -240.5213996
-240.451527 -240.5213996
-240.4273718 -240.4956636
-240.4515273 -240.5214005


-319.0829339 -319.177099

Perfect! It works. But I was so confused with this powerful script.
How did you put these empty lines?
Could you explain me something about this script.
I really want to learn something from here.
Thank you very much!

Very strange thing took place! see the following lines
Code:
1c1
< awk -F= '/.log/ && P { print "" }/.log/ { P=1 }/^HF/ { printf $2 "           " ; getline; print $2; P=0 }' TE.txt >> test7
---
> awk -F= '/.log/ && P { print "" }/.log/ { P=1 }/^HF/ { printf $2 "           " ; getline; print $2; p=0 }' TE.txt >> test7

I thought they are exactly the same code. But the outputs are totally different. The first line gave the correct output but the second line didn't.
Why? It's so strange that I cannot understand.
Output with the code of the first line
Code:
-240.451527           -240.5213996
-240.451527           -240.5213996
-240.4273718           -240.4956636
-240.4515273           -240.5214005


-319.0829339           -319.177099
-319.082436           -319.1777128
-319.0857963           -319.1786906
-319.0814125           -319.174904

-319.0814044           -319.1748736
-319.0827201           -319.173826
-319.0863378           -319.1788978
-319.075422           -319.1668696
-319.0650245           -319.1607778
-319.103556           -319.1942108

Output with the second line of the code.
Code:
-240.451527           -240.5213996

-240.451527           -240.5213996

-240.4273718           -240.4956636

-240.4515273           -240.5214005



-319.0829339           -319.177099

-319.082436           -319.1777128

-319.0857963           -319.1786906

-319.0814125           -319.174904


-319.0814044           -319.1748736

-319.0827201           -319.173826

-319.0863378           -319.1788978

-319.075422           -319.1668696

-319.0650245           -319.1607778

-319.103556           -319.1942108


-319.103556           -319.1942133

Last edited by liuzhencc; 11-06-2009 at 09:09 AM..
 

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