user: Question: How many values of powershell (cmdlet) are valid when unix shell is env, export, set, setenv?
Columns: ['PowerShell (Cmdlet)', 'PowerShell (Alias)', 'CMD.EXE / COMMAND.COM', 'Unix shell', 'Description']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Get-Content', 'gc, type, cat', 'type', 'cat', 'Get the content of a file']
SQL:

assistant: SELECT COUNT("PowerShell (Cmdlet)") FROM "Table" WHERE "Unix shell" = 'env, export, set, setenv';