String manipulation using ksh

zambo · #1 (**permalink**) 09-17-2008

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 (/tmp/here/location/dev).
This command will be used in a shell script.

DukeNuke2 · #2 (**permalink**) 09-17-2008

what is wrong with:
echo "$WHEREIAM"
?

zambo · #3 (**permalink**) 09-17-2008

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

zambo · #4 (**permalink**) 09-18-2008

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 example i'll have when echo $WHEREIAM after ===>=/tmp/here/location/dev

Franklin52 · #5 (**permalink**) 09-18-2008

Place the variable between double quotes or braces:

Code:

LEVEL=dev
SITE=here
WHEREIAM=/tmp/${SITE}/location/${LEVEL}

Regards

vidyadhar85 · #6 (**permalink**) 09-18-2008

Quote:

Originally Posted by zambo

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 example i'll have when echo $WHEREIAM after ===>=/tmp/here/location/dev

if you use double quotes it should give expected result..

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