/usr/share/doc/bash/examples/scripts/self-repro is in bash-doc 4.2+dfsg-0.1+deb7u3.
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1 2 3 4 5 6 7 8 9 | # self-reproducing script (except for these comment lines -- remove them)
# i got this from the ksh93 faq:
# http://www.kornshell.com/doc/faq.html
#
n="
" q="'" x="cat <<-!" y=! z='n="$n" q="$q" x="$x" y=$y z=$q$z$q$n$x$n$z$n$y'
cat <<-!
n="$n" q="$q" x="$x" y=$y z=$q$z$q$n$x$n$z$n$yb
!
|