Invoking a certain section of a powershell file.

Hi,

Forgive my incompetance, but it is possible to invoke a certain section of a
powershell file? There is a certain section that needs to be invoked upon
reboot but i am not sure about how to get it to do that without rerunning the
entire file.

Jason

I would

1) make the section a function
2) Add a switch flag as a parameter
3) first thing to check is that switch.. if it is true call function and
exit.

Brandon Shell
---------------
Blog: http://www.bsonposh.com/
PSH Scripts Project: www.codeplex.com/psobject

g> Hi,
g>
g> Forgive my incompetance, but it is possible to invoke a certain
g> section of a powershell file? There is a certain section that needs
g> to be invoked upon reboot but i am not sure about how to get it to do
g> that without rerunning the entire file.
g>
g> Jason
g>

Could you give me a little more detail on those three steps? I'm somewhat
confused on how to begin. Sorry

"Brandon Shell [MVP]" wrote:

greatbarrier86 wrote: Here's a simple example:

--------test.ps1---------
param($status)
function all{
write-host "all function run"
}
function boot{
write-host "boot function run"
}

# If boot passed as argument run the boot function.
if ($status -eq "boot"){
boot
exit
}

# We either exit above, or run this last function.
all
-------------------------

PSH> ./test.ps1
all function run
PSH> ./test.ps1 boot
boot function run
PSH>

Marco

--
Microsoft MVP - Windows PowerShell
http://www.microsoft.com/mvp

PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

You can invoke each line in the section of the script by slicing the array Get-Content returns.
In the sample script the section begins on line 5 and ends on line 7.

# the slice would begin on element 4 and end on element 6:
@(get-content .\script.ps1)[4..6] | invoke-expression

-< script.ps1 >-
[datetime]::minValue
$firstInput = read-host 'firstInput'
$firstInput.toLower()
# begin section
"Current date & time:`n$(get-date -u %c)"
$sectionInput = read-host 'sectionInput'
$sectionInput.toUpper()
# end section
[datetime]::maxValue
$lastInput = read-host 'lastInput'
$lastInput.toLower()
-< end >-

--
Kiron

So, the following would be correct?

param($status)
function SQL
{
c:\Setup\MSEE\SQLEXPR.EXE
reg import C:\Setup\MSEE\MseePort.reg
Stop-Service SQLBrowser
Set-Service SQLBrowser -startupType disabled
}

if ($status -eq "SQL")
{
SQL
exit
}

This seems correct. At least from your example.


"Marco Shaw [MVP]" wrote:

Kiron,

Is there an advantage of that over using a function?

J

"Kiron" wrote:

Hmm...that does not appear to work. When i run it inside of a larger ps1
file, it errors out saying that Param is not a cmdlet...etc

"greatbarrier86" wrote:

Something like this

param($normalParam1,$normalparam2,[switch]$Section)
function a{}
function b{}
function c{}
function Section{
put section code here
}
if($Section){Section;exit}
code...
code...
code...


Brandon Shell
---------------
Blog: http://www.bsonposh.com/
PSH Scripts Project: www.codeplex.com/psobject

g> Could you give me a little more detail on those three steps? I'm
g> somewhat confused on how to begin. Sorry
g>
g> "Brandon Shell [MVP]" wrote:
g>

If you don't want to alter the script, yes, it's a way to extract and execute statements from it.
Don't get me wrong, I'm all for calling functions from scripts, check out this post:

news:F6624437-79A7-46F5-AC45-D9A80FE0597D@xxxxxx

--
Kiron