KORN: Looping through output of command

eur0dad · 08-02-2006, 01:03 PM

In bash, I normally use this to read each line of output:

while read line
do
echo $line
done < <(cat /myfile.txt | cut -f1 -d" ")

But this doesn't fly in KSH. I can't find the same thing on any tutorials, doesn't anyone know how to do this in Korn?

jim mcnamara · 08-02-2006, 02:37 PM

Code:

#!/bin/ksh
cat /myfile.txt | cut -f1 -d" " | \
while read line
do
echo $line
done

jlliagre · 08-02-2006, 03:16 PM

or with a closer syntax:

Code:

#!/bin/ksh
while read line
do
echo $line
done <<%
$(cat /etc/hosts | cut -f1 -d" ")
%

eur0dad · 08-03-2006, 11:15 AM

Quote:

Originally Posted by jim mcnamara

Code:

#!/bin/ksh
cat /myfile.txt | cut -f1 -d" " | \
while read line
do
echo $line
done

This method works perfectly. The other one that was posted kept giving me "% unclosed" errors.

jlliagre · 08-03-2006, 02:57 PM

Quote:

Originally Posted by eur0dad

The other one that was posted kept giving me "% unclosed" errors.

Huh ?

Please double check, it works for me with both the real ksh and pdksh.

You probably missed to copy the last line: "%"