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Passing awk variables to bash variables

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# 1  
Old 12-30-2014
Passing awk variables to bash variables
Trying to do so
Code:
echo "111:222:333" |awk -F: '{system("export TESTO=" $2)}'

But it doesn't work
Last edited by urello; 12-30-2014 at 05:46 PM..
# 2  
Old 12-30-2014
You are passing them into a subshell, which does not affect the outer shell.
Code:
export TESTO=`echo "111:222:333" |awk -F: '{print $2}'`

or all shell:

echo "111:222:333" | (
IFS="$IFS:"
read x TESTO y
IFS="${IFS%:}" 
. . .
) # bash needs you to process inside a subshell, but ksh does not, uses the parent shell as the final shell on the pipe.

Last edited by DGPickett; 12-31-2014 at 09:15 AM..
# 3  
Old 12-30-2014
You can't pass awk variables to the shell directly. You could use an intermediate file or a (named) pipe, or you can use command substitution
Code:
TESTO=$(echo "111:222:333" | awk -F: '{print $2}')

or process substitution in bash/ksh93/zsh
Code:
read TESTO < <(echo "111:222:333" | awk -F: '{print $2}')

--
or a regular pipe in ksh and zsh only
Code:
echo "111:222:333" | awk -F: '{print $2}' | read TESTO

(also works with bash 4 with shopt -s lastpipe in a non-interactive shell)
Last edited by Scrutinizer; 12-30-2014 at 07:28 PM..
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