[Trisquel-users] Re : How can one capture the "Failed to resolve" output to console during an nMap scan ?

[lcerf]

That teenie little ampersand (&) is the key

You can also only redirect the standard output with '>' (or '1>') and only  
the error output with '2>'.  And you can use both:
$ command > standard_output 2> error_output
I wish there could be a scripted way of separating the two populations into  
two lists. Manually, it's very tedious.

Two 'grep's probably provide a solution.  But I do not really understand what  
you want.  As always, an excerpt of the input (with all cases) and the  
expected outputs would help.