On Wed, 30 Jan 2008 13:44:47 -0700, Bob Proulx wrote: > Stefan Palme wrote: >> don't know if this is the right newsgroup, but it's the only one I can >> find with "bash" in its name :-) > > That newsgroup is gatewayed to the bug-bash mailing list. > >> I want to do something like this: >> >> result="" >> /usr/bin/output_generator | while read line; do >> extracteddata=`echo "$line" | sed -e 's/X/Y/'` result="$result >> $extracteddata" >> done >> /usr/bin/another_tool "$result" >> >> In the last line is "result" as empty as at the start of the whole >> thing - I guess because the inner "while" loop is executed in a >> subshell, so that changing the value of "result" in this loop does not >> affect the "outer result". > > Please See the Bash FAQ question E4 for more information describing this > problem.
Thanks, I've understood the problem and solved it. And sorry for asking this FAQ on the wrong NG. Regards -stefan-
