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Help  Go to the Choose your Path II challenge

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Can someone point me in the right direction for this? I am trying to exploit the replacement function somehow. Is it possible or does the solution require a different approach?
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Ok I just solved it. It was a delight. Smile
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I'm lost on this one. Dose it involve reverse engineering using gdb (memory modification)? I ask because all I can think of as an injection in arg1 can't break the surrounding single quotes to form something like:
GeSHi`ed bash code
1
wc 'blah'  | cat solution.txt > 'somewhere' 


Any hint would be welcome. Thank you!
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Any hint?
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A hint please! I am spending my whole life on this!!!
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Hahaha, finally solved! So easy, but I was narrow-minded.
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