CREATE TABLE table_72550 ("PowerShell  ( Cmdlet ) " TEXT, "PowerShell  ( Alias ) " TEXT, "CMD.EXE / COMMAND.COM" TEXT, "Unix shell" TEXT, "Description" TEXT)

How many values of powershell (cmdlet) are valid when unix shell is env, export, set, setenv?
SELECT COUNT("PowerShell (Cmdlet)") FROM table_72550 WHERE "Unix shell" = 'env, export, set, setenv'
SELECT COUNT("PowerShell (Cmdlet)") FROM "table_72550" WHERE "Unix shell" = 'env, export, set, setenv'