when "login"
    if username == nil
      execmd = "schtasks /create /tn \"#{taskname}\" /tr \"#{cmd}\" /sc onlogon /s #{targetsys} /ru system "
    else
      execmd = "schtasks /create /tn \"#{taskname}\" /tr \"#{cmd}\" /sc onlogon /s #{targetsys} /u #{username} /p #{password} /ru system "