On a Linux system, wget can be used to download openresty.repo.

wget https://openresty.org/package/fedora/openresty.repo

And then move the openresty.repo into the /etc/yum.repos.d directory.

mv openresty.repo /etc/yum.repos.d/

apt-get (Debian, Ubuntu), dnf or yum (CentOS, Fedora, Red Hat) can be used to install OpenResty.

dnf install openresty openresty-resty

The which command should now show that the resty command line tool (CLI) exists.

which resty

Something like this should be returned.

/bin/resty

The following command can be issued to test resty.

resty -e 'print("Hello World")'

And Hello World should be returned.

Hello World