Lower casing and truncating a variable in a shell script

Question

I am trying to convert a variable to lower case and strip a suffix at the same time. The variable contains a file name and I am stripping the extension:

for f in *.shp; do echo ${f%.*};done

To convert a variable to lowercase I know the command is,

${f,,}

But how do I convert ${f%.*} to lower case within the loop?

Answer 1

This worked for me.

for f in *.shp; do a=${f,,}; echo ${a%.*}; done