Re: List words separated by comma and without duplicates

["Antonio A. Rendina" <arendina13@gmail.com>]

On Sun, 2018-04-29 at 19:43 +0200, Rodolfo Medina wrote:
> Hi all.
> 
> Suppose I have a file made by a list of names and surnames, e.g.:
> 
> Arvo Part
> Harold Pinter
> Lucio Battisti
> Antonio Amurri
> Eduardo De Filippo
> Eduardo De Filippo
> 
> and that I want them listed all on one line, separated by a comma and
> without
> duplicates, i.e.:
> 
> Arvo Part, Harold Pinter, Lucio Battisti, Antonio Amurri, Eduardo De
> Filippo
> 
> How can I do that with proper Unix commands?
> 
> Thanks for any help.
> 
> Rodolfo
> 

I would do something like that:
cat list-file | sed s/$/,/ | tr '\n' ' '

If you want to improve your bash skills you can read:
http://www.tldp.org/LDP/Bash-Beginners-Guide/html/

It is really useful.

-- 
Antonio