How to use stdin to give data to rankmirrors command Probably a rooky question, but I have seen that the "rankmirrors" command can use the **stdin** input. But when I run the following command (which retrieve all URL in use in the "mirrorslist" file to the "rankmirrors"), I get an error: $ rg -e "^Server" /etc/pacman.d/mirrorlist | rg -oe "https.*" | rankmirrors -t Must specify URL, mirrorfile, or stdin. There is another way to use the previous command **stdout** as current **stdin** of the command ?

A common convention for telling "read from stdin" for programs that normally expect a filename or URL specified on the command line is to specify just a single minus sign in place of the filename/URL. The `rankmirrors` command supports this convention, so:


rg -e "^Server" /etc/pacman.d/mirrorlist | rg -oe "https.*" | rankmirrors -t -


Reference: <