Run tdpsql command from powershell - powershell

Question

I have a script that requires 3 mandatory input parameters that will be used to run the backup command for tdpsql.
type (FULL, DIFF or LOG)
SQLServerinstancename
Database (SYSTEM, ALL, )
Within the powershell script I have the following line
$cmd = "C:\Progra~1\Tivoli\TSM\TDPSql\tdpsqlc.exe backup " + $idatabase + " " + $action + " " + $parameter + " /LOGFILE=" + $logdir + $logfile + "" $tdpsqlexe - The tdpsqlc exe.
$idatabase - Database name
$action = FULL\DIFF\LOG
$parameter = /sqlserver=TCP:" + $sqlserverinstance + " /SQLAUTH=INT /TSMOPTFile='" + $dsmoptfilename + "' /EXCLUDEDB=" + $exclude
& $cmd
When I echo the command it reports out what I use to run it using powershell command line but when I try to run it from Powershell with the & it fails with the following
The term
C:\Progra~1\Tivoli\TSM\TDPSql\tdpsqlc.exe
backup master FULL
/sqlserver=TCP:
/SQLAUT H=INT
/TSMOPTFile=C:\Progra~1\Tivoli\TSM\TDPSql\dsm.opt /EXCLUDEDB=tempdb /LOGFILE=<logfile>
is not recognized as the name of a
cmdlet, function, script file, or
operable program.Check the spelling of
the name, or if a path was included,
verify that the path is correct and
try again. At TDPSQLBackup.ps1:166
char:6
+ & <<<< $cmd >> test2.txt
+ CategoryInfo : ObjectNotFound:
(C:\Progra~1\Tiv...forsqlimran.txt:String)
[], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
Any help will be really appreciated.

Answer 1

You might try Invoke-Expression $cmd instead of & $cmd.

Answer 2

Yes better use Invoke-Expression, but if you still want to use & you can do it in this way.
$cmd = "C:\Windows\System32\notepad.exe"
$params = "C:\temp\file.txt"
& $cmd $params
Using a var for program file ans a var for parameters.

Answer 3

Instead of running a batch command you'd better try Powershell cmdlets as follow
import-module "C:\Program Files\Tivoli\Flashcopymanager\fmmodulemmc.dll"
import-module "C:\Program Files\Tivoli\Flashcopymanager\fmmoduleSQL.dll"
$startTime = get-date
Backup-DpSqlComponent -Name AdventureWorks2012 -BackupDestination TSM -BackupMethod Legacy -Full
$endTime = get-date
$activity = Get-FcmMmcActivity -StartTime $startTime -EndTime $endTime
$activity
Reference link
http://www-01.ibm.com/support/docview.wss?uid=swg21974345