Oct 26, 2005 kl. 7:56 PM skrev Wiggins d'Anconia:
Tommy Nordgren wrote:
Oct 25, 2005 kl. 6:21 AM skrev Pant, Hridyesh:
Hi All,
How to extract zip file using perl program...
Thanks
Hridyesh
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system '/usr/bin/unzip',@OPTIONS,$zipfile;
Time for me to rant about how the above is unacceptable for anything
other than a one off script. Shelling out using 'system' or
backticks is
a last resort and should be used with care and the proper precautions
Calling system with multiple paramaters don't 'shell out' as you call
it.'
It launches the tool in question directly, bypassing the shell entirely.
The main security concern of calling accientally a trojan horse
earlier in
the users path, don't apply when using the array form of system, with an
absolute search path
taken. The above lacks proper error handling, security safe guards,
and
is inefficient and non-portable.
So the ML archives for further discussion of how to properly shell
out...
http://danconia.org
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Tommy Nordgren
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