No metadata in PowerShell Core

PS /home/jeff> cat /home/jeff/remoteop/FOO_45253ad9-df3c-4905-891e-8d46f37c4863.psd1
@{
CreatedOn = ''
CreatedBy = '\'
CreatedAt = '10/10/2018 17:56:55 UTC'
Computername = 'FOO'
Scriptblock = 'get-process | out-file ~/p.txt'
}

Need to test for Linux and use $env:user instead of $env:username. Also Hostname instead of $env:Computername
