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Mac > Mac Programmer > Odd ksh problem
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Odd ksh problem

by Robert Peirce <bob@[EMAIL PROTECTED] > Feb 29, 2008 at 07:42 PM

This worked on Uwin, but it is blowing up on my Mac.  I just have a 
fragment here.

Data prints out a colon separated record of every week in our database 
for a stock "$i."  I change the colon to <TAB>, extract the first, third 
and fourth fields and pass the last 200 lines on to a while loop.

I put tee foobar in to be sure the data was actually getting to the 
loop.  It is.

The loop has been compressed to just print the lines coming in.  From 0 
to 2 random lines get printed.  There is no pattern I have seen.  It is 
possible you can't pipe data to a while loop on a Mac.  Maybe it isn't 
supposed to work on any machine.  Maybe there is something about dual 
core machines that causes the problem.

I could rewrite the script to use awk.  Originally it was an awk script 
that I rewrote to experiment with ksh.  However, ksh ought to work if I 
set it up right.

data $1 |
tr : '\t' |
field 1 3 4 |
tail -200 |
tee foobar |

while read -r line
do print -r -- $line
done

-- 
Robert B. Peirce, Venetia, PA  724-941-6883
bob AT peirce-family.com [Mac]
rbp AT cooksonpeirce.com [Office]
 




 6 Posts in Topic:
Odd ksh problem
Robert Peirce <bob@[EM  2008-02-29 19:42:58 
Re: Odd ksh problem
Robert Peirce <bob@[EM  2008-02-29 20:52:09 
Re: Odd ksh problem
Bob Harris <nospam.New  2008-03-01 01:07:27 
Re: Odd ksh problem
Robert Peirce <bob@[EM  2008-03-01 17:04:56 
Re: Odd ksh problem
Bob Harris <nospam.New  2008-03-02 01:42:06 
Re: Odd ksh problem
Robert Peirce <bob@[EM  2008-03-02 16:17:33 

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tan12V112 Sun Jul 6 1:29:43 CDT 2008.