On Tuesday, 25 March 2014, at 10:52 pm, Cristian Ionescu-Idbohrn wrote:
> I find out that using that option:
> 
>       -x hostname:foo
>                  ^
> 
> shows up in /proc/<pid>/cmdline as:
> 
>       -x hostname foo
>                  ^

/proc/<pid>/cmdline reflects any changes that the process has made to its argv 
array. It's common when parsing a command line for a program to replace 
delimiters with null bytes. The /proc/<pid>/cmdline interface converts null 
bytes to spaces for ease of display and parsing.
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