From: Brian Candler <b.candler@...>
Date: 2008-10-04T04:55:56+09:00
Subject: Re: Remotely passing value on system() or %x[]

Bikas De simex wrote:
> system("plink -pw ppp xxx@yyyy /tmp/essai.ksh #{dirc[3]}") work ....!

Even better is:

  system("/path/to/plink", "-pw", "ppp", "xxx@yyyy", "/tmp/essai.ksh", 
dirc[3])

This is because the argument array is passed as-is to the child process. 
There is no shell performing line splitting. This eliminates a number of 
potential errors and security holes, e.g. if dirc[3] contains spaces, 
quotes, or other special characters subject to interpretation by the 
shell.
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