Linux - PowerShell

https://github.com/PowerShell/PowerShell/releases/

$ su

Ubuntu
$ apt-get install libunwind8 libicu55
$ dpkg -i powershell_6.0.0-alpha.16-1ubuntu1.16.04.1_amd64.deb

CentOS
$ yum install powershell-6.0.0_alpha.16-1.el7.centos.x86_64.rpm

Mac
$ installer -pkg powershell-6.0.0-alpha.16.pkg -target /