nospaces

#!/usr/bin/awk -f
BEGIN{
        occ = 0
}
{
        
        if (substr($0, length($0)-1, length($0)) == "[:space:]") {
                printf("Space alert at line %d\n", NR)
                print $0
                occ += 1
        }
}
END{
        if (occ != 0){
                printf("Found %d spaces at line endings", occ)
        }
}