POSTIN

/bin/sh

# adding mime type for squirrelsh scripts
echo -e "application/x-squirrelshscript\t\tnut" >> /etc/mime.types

POSTUN

/bin/sh

# remove mime type that belongs to squirrelsh package
# sed leave an empty line after the replacement
#/usr/bin/sed -i 's|application/x-squirrelshscript[[:space:]]*nut||g' /etc/mime.types
cat /etc/mime.types | egrep -v 'application\/x-squirrelshscript' > /etc/mime.types.new
mv /etc/mime.types.new /etc/mime.types