Dears,
I installed CV using composer require civicrm/cv but when I run a command SSH says 'cv: command not found'.
What did I forget ?
Stefaan
http://www.linfo.org/path_env_var.html. If that doesn't help then search the internet for more explanations about what the unix PATH variable is, e.g. https://www.google.com/search?q=what+is+the+PATH+in+unix
But I'd also consider just downloading cv and then putting it somewhere that's already in your PATH, possibly /usr/local/bin.
You can also just specify the full path, e.g. /path/to/your/site/vendor/civicrm/cv/bin/cv (or whereever it ended up getting installed).
echo $PATH
show? Use something in there for (b).