Hi everybody, i'm trying to install swift on my linux os but i have this error when i try to run something like "swift --version"
swift: error while loading shared libraries: libtinfo.so.6: cannot open shared object file: No such file or directory
Do you know how can i solve? 
I did this on Fedora 33 Linux:
$ sudo dnf install swift-lang
I have a son of Debian so i tried sudo apt install swift-lang but i have this error E: Unable to locate package swift-lang so i don't know how can i solve... :-/
The list of dependencies for Ubuntu are listed at Swift.org - Download Swift. In particular, installing libedit2 should include the dependency libtinfo5, which is what you're seeing the error about.
Hi thanks for reply, i have installed it correctly libedit2 is already the newest version (3.1-20170329-1). and libtinfo5 is already the newest version (6.1-1ubuntu1.18.04). but when i try to follow your linked guide at the end i have the same problem, so swift: error while loading shared libraries: libtinfo.so.6: cannot open shared object file: No such file or directory
I really don't know how can i solve :-/
However i'm trying do download the last version of swift (5...) that is really new and i thing that some libraries isn't updated... for you can be a solution install an old version?
I would like to specify that I have ElementaryOS that is a son of Ubuntu
Are you using the Ubuntu 18.04 build of Swift?
Nope i'm using Ubuntu 20.04, i must try using Ubuntu 18.04?
I SOLVED USING THIS GUIDE
I have followed the steps but still getting the same issue
swift: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory
My Configuration: Ubuntu22.04.3 (WSL2)
Finally found the solution from Vapor's website, somewhat randomly.
Just run this command to download Swiftly, and at last it will prompt you with the command to download the latest version of the Swift.
curl -L https://swift-server.github.io/swiftly/swiftly-install.sh | bash
I just downloaded it in my Ubuntu (WSL).