set days [exec grep sshd messages.1 | grep password | cut -d " " -f 2 | sort -u]
  set row 1

  foreach day $days {
    set ssh_count [exec grep sshd messages.1 | grep password | grep "Dec $day" | wc -l]
    label .l1_$day -text "Number of SSH messages on Dec $day is $ssh_count"
    grid .l1_$day -row $row -column 1
    set row [expr {$row + 1}]
  }

  button .exit -text Exit -command exit 
  grid .exit -row $row -column 1