make sure that there is only one hit by resolving links

bash/aptinfo.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 # shows `apt-cache show`information for a package that given binary belongs to (relative path)
-apt-cache show $(apt-file search $(which $1) | cut -d ":" -f 1)
+apt-cache show $(apt-file search $(readlink -f "$(which $1)") | cut -d ":" -f 1)
 exit 0