AWK count how many instance after pattern match

Question

For example:

• RXOTG-1388 holds 3 object RM4FD1,RM4FD2,RM4FD3
• RXOTG-1398 holds 3 object VT08D1 VT08D2,VT08D3
• and so on.

Based on this text file I would like to count, using awk, how many object each RXOTG holds.

RXOTG-1388       RM4FD1               0
                 RM4FD2               0
                 RM4FD3               0

END
RXOTG-1398       VT08D1               0
                 VT08D2               0
                 VT08D3               0

END
RXOTG-1400       VT08S1               0
                 VT08S2               0
                 VT08S3               0

END

Answer 1

awk '
    /^RXOTG/{
        if(count)
            print count
        printf "%s\t", $1
        count = 0
    }
    /.{6,}/{
        count++
    }
    END{
        print count
    }'

Answer 2

awk '/^RXOTG/{x=$1; y=0}/^RXOTG/,/^$/{y++}/^END/{print x": "y-1}' in

• /^RXOTG/{x=$1; y=0}: if the current record starts with RXOTG, assigns the value of the first field to x and 0 to y;
• /^RXOTG/,/^$/{y++}: if the current record is in a range between a record starting with RXOTG and an empty record, increases y;
• /^END/{print x": "y-1}: if the current record starts with END, prints the value of x followed by : followed by the value of y decreased by 1.

% cat in
RXOTG-1388       RM4FD1               0
                 RM4FD2               0
                 RM4FD3               0

END
RXOTG-1398       VT08D1               0
                 VT08D2               0
                 VT08D3               0

END
RXOTG-1400       VT08S1               0
                 VT08S2               0
                 VT08S3               0

END
% awk '/^RXOTG/{x=$1; y=0}/^RXOTG/,/^$/{y++}/^END/{print x": "y-1}' in
RXOTG-1388: 3
RXOTG-1398: 3
RXOTG-1400: 3