Ed source code

while :;do read x;echo \?;done

Here is the source code in x86 assembly (submitted by Nate)

[ORG 0x100]
top: mov ah,0x0a
mov dx, buffer
int 0x21
mov ah, 0x09
mov dl,message
int 0x21
jmp short top
message:
db 10,'?',13,10,'$'
buffer:

Other humor in the GNU Humor Collection.

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