UNIX for Dummies Questions & Answers

I need some syntax help (working in a bash shell)

I have a variable which is a filename with an extension, and I need to create another variable with the same name but a different extension

To explain, the input file should be called something like "filename.L1" and the output file should be "filename.GEO"

so here's what I've been typing, but it doesn't work:

input=filename.L1
output=echo $input | sed s/L1/GEO/g


can anybody tell me how I should do this?

-Brent.

never mind, I got it.

This thread can be deleted...

it should look like this:

output=`echo $name | sed s/L1/GEO/g`


I didn't know about backticks...