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McEs, A Hacker Life
Saturday, December 01, 2007
 Ultimate Shell Puzzle

Dave: I found the answer to that puzzle the hard way a few years ago. The way I found it though makes a much more interesting puzzle:

What does the following script do:
#!/usr/bin/env PATH=/bin:/usr/bin python
print "Hello"

Labels: , ,

¶ 4:27 AM

Comments:
Looks like a fork bomb
# posted by Anonymous Anonymous : December 01, 2007 5:13 AM
 
ls /usr/bin/print -al
/usr/bin/print -> run-mailcap
# posted by Anonymous Anonymous : December 01, 2007 9:15 AM
 
shebang only allows an application to be called with a single argument, as far as I know. I know FreeBSD 5.x and lower just break it up to multiple arguments, but this was fixed in later versions.
# posted by Anonymous Anonymous : December 01, 2007 2:49 PM
 
sets the path to "PATH=/bin:/usr/bin python" and then invokes the script again (entering an infinite loop)
# posted by Anonymous Anonymous : December 01, 2007 9:26 PM
 
fix this link's text ;)
http://hapalihapo.blogspot.com/
# posted by Blogger Me : December 10, 2007 2:37 PM
 
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