New meets old

$ type deck2.com
$ python /sys$input
$ deck
import sys
sys.stdout.writelines(sys.stdin.readlines())
sys.stdout.writelines(sys.stdin.readlines())
$ eod
$ deck
A
B
$ eod
$ deck
C
D
$ eod
$ exit
$ @deck2
A
B
C
D
Arne