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

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'