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

[lcerf]

Just need to suppress that non-matching data ... which can be done with  
LibreOffice Calc in post processing by sorting and the deleting the rows with  
blank entries ...

Are you referring to the lines where my command line does not detect any IPv4  
address?  If so, 'grep' can be used at the output:
$ tr -sc 0-9\\n ' ' < hostname_list | awk '{ k = 0; for (i = 0; k < 4 && ++i