This is day 3 of how to create an error log.
You may be faced with a situation when you want to clear the
error log before running your code. We
are now going to start building the code for our scenario from Monday.
Function Test-ADUsers
{
[CmdletBinding()]
Param (
[String[]]
$Names
)
ForEach
($Name in
$Names)
{
Try
{Get-ADUser -Identity
$Name -ErrorAction
Stop}
Catch
{}
}
}
# END: Function Test-ADUsers
Test-ADUsers -Names "Administrator",
"Bad" ,
"Administrator"
I left the test line at the end of the code so you can copy
this into the ISE or SAPIEN PowerShell Studio and just execute the code. Notice that we are not doing anything in our
error handling as of yet. Our next step
is to add in the Test-ErrorLog code from yesterday.
Function Test-ADUsers
{
[CmdletBinding()]
Param (
[parameter(Mandatory=$true)]
[String[]]
$Names
# Begin Support Functions
)
Function
Test-ErrorLog
{
[CmdletBinding()]
Param (
[parameter(Mandatory=$true)]
[String]
$Path,
[parameter(Mandatory=$true)]
[String]
$Name
)
# Test
the path.
If
(!(Test-Path
-Path $Path))
{
Write-Verbose
"Creating the directory $Path"
New-Item
-Path $Path
-ItemType Directory
}
# Test
the file
If
(!(Test-Path
-Path "$Path\$Name"))
{
Write-Verbose
"Creating the file $Name"
New-Item
-Path "$Path\$Name" -ItemType File
}
} # END:
Function Test-ErrorLog
# End Support Functions
# Verify that
the error log is present.
Test-ErrorLog
-Path c:\ps
-Name Errorlog.csv
ForEach
($Name in
$Names)
{
Try
{Get-ADUser -Identity
$Name -ErrorAction
Stop}
Catch
{}
}
}
# END: Function Test-ADUsers
Test-ADUsers -Names "Administrator",
"Bad" ,
"Administrator"
I removed the help file for Test-ErrorLog to help keep this post reasonably short. Next we add a parameter to clear the error
log if we want to. We will call it –NoAppend.
Function Test-ADUsers
{
[CmdletBinding()]
Param (
[parameter(Mandatory=$true)]
[String[]]
$Names,
[Switch]
$NoAppend
# Begin Support Functions
)
Function
Test-ErrorLog
{
[CmdletBinding()]
Param (
[parameter(Mandatory=$true)]
[String]
$Path,
[parameter(Mandatory=$true)]
[String]
$Name
)
# Test
the path.
If
(!(Test-Path
-Path $Path))
{
Write-Verbose
"Creating the directory $Path"
New-Item
-Path $Path
-ItemType Directory
}
# Test
the file
If
(!(Test-Path
-Path "$Path\$Name"))
{
Write-Verbose
"Creating the file $Name"
New-Item
-Path "$Path\$Name" -ItemType File
}
} # END: Function
Test-ErrorLog
# End Support Functions
# Verify that
the error log is present.
Test-ErrorLog
-Path c:\ps\error
-Name Errorlog.csv
# If
-NoAppend is TRUE, then clear the error log.
If(($NoAppend))
{
Write-Verbose
"Clearing the error log"
Remove-Item
-Path C:\PS\error\ErrorLog.csv
-Force
New-Item
-Path C:\PS\error
-Name ErrorLog.csv
-ItemType File
}
ForEach
($Name in
$Names)
{
Try
{Get-ADUser -Identity
$Name -ErrorAction
Stop}
Catch {}
}
}
# END: Function Test-ADUsers
Test-ADUsers -Names "Administrator",
"Bad" ,
"Administrator" -NoAppend -Verbose
-NoAppend is a switch parameter. We simply test to see if it is used or
not. If it is, we remove the old file
and then create a new one in its place.
This allows us to start with a clean error log whenever we need to. Go ahead and give it a try. Make sure you open the error log to verify
that it is either appending, or being cleared.
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