search and replace within string

[Wade Preston Shearer]

I have another shell script question. I am trying to pass a script a string, replace a portion with something else, and then return the updated string.

for f in "$@"
do
        newString = $(echo $f | xargs sed -i -e "s/dick/harry/g")
        return newString
done

I am getting an error trying to change "dick" to "harry" with the following:

smime.p7s
Description: S/MIME cryptographic signature

/*
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