From: Zebrouvis, Lois (zebrouvis@PPG.COM)
Date: Thu Nov 06 2003 - 10:38:09 EST
that is not true for aix or hp-ux - that is a linux issue
-----Original Message-----
From: Harvey, Bruce T. [mailto:BTHarvey@LMUS.LEGGMASON.COM]
Sent: Thursday, November 06, 2003 9:36 AM
To: aix-l@Princeton.EDU
Subject: Re: for command
Keep in mind that the shell creates a subshell to feed the pipe to, such
that if you change a program variable within the 'while' loop, it will not
end up changed after the loop. For example:
variable=2
cat testfile | while read f
do
variable=3
done
when you reach here, variable is equal to 2
Just a side note to remember that I usually forget at least once every two
years or so.
Bruce T. Harvey
Legg Mason Wood Walker, Inc.
Corporate Technology - UNIX Admin.
Red Run 2nd Floor - Owings Mills, MD
(410) 580-7383 - BTHarvey@LeggMason.com
-------------------------------------------------------
-----Original Message-----
From: Paul LaMadeleine [mailto:plamadeleine@LIGHTBRIDGE.COM]
Sent: Thursday, November 06, 2003 9:22 AM
To: aix-l@Princeton.EDU
Subject: Re: for command
I usually do something like this:
cat testfile | while read line
do
echo $line
done
At 02:10 PM 11/6/2003 +0000, you wrote:
>Given the following data how do I get the following script to echo each
>line, rather than each string?
>
>for line in `cat testfile`
>do
> echo $line
>done
>
>
>testfile =
>
>hhhh jjjjjjj kkkkkkkkk
>ggggg lllllll mmmmmm
>sssss kkkkk llllll
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