Shell Programming and Scripting

awk  '
    BEGIN { i = 0; }

    {
        split( $2, a, ":" );               # divide field 2 into hr min sec 
        t = (3600 * a[1]) +  (60 * a[2]);  # compute sec past midnight; 80100 is 22:15:00
        if( t < 80100 )                 # wrapped to next day; must roll
            roll = 1;

        if( snarf || t >= 80100 )       # snarfing or past the magic time
        {
            if(  t >= 80100 && roll )   # 22:15 the next day; clear first
            {
                roll = 0;
                delete capture;
                i = 0;
            }

            snarf = 1;
            capture[i++] = $0;     # buffer the record
        }
    }

    END {
        for( j = 0; j < i; j++ )
            print capture[j];
    }'  input-file