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Actually could have something like:
WHEREIAM= `echo $WHEREIAM | command`
where command(using sed, awk, ...) will replace all environment variables by their value within the shell so that in my...

echo "$WHEREIAM" gives /tmp/$SITE/location/$LEVEL instead of as I would have expected /tmp/here/location/dev

I have a UNIX shell where:
LEVEL=dev
SITE=here
and WHEREIAM=/tmp/$SITE/location/$LEVEL

I want to echo $WHEREIAM in such a way that I get it back with all the environment variables resolved...

I have a shell script and want to assign a value to a variable. The value is the line exctrated from a file using the line number. The line number it is not fix, and could change any time.
I have...