Get-LastBootTime.ps1
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Script
function Get-LastBootTime {
<#
.SYNOPSIS
A brief description of the Get-LastBootTime function.
.DESCRIPTION
A detailed description of the Get-LastBootTime function.
.PARAMETER ComputerName
A description of the ComputerName parameter.
.PARAMETER DaysPast
A description of the DaysPast parameter.
.EXAMPLE
PS C:\> Get-LastBootTime -ComputerName 'value1'
.OUTPUTS
System.String
.NOTES
Additional information about the function.
#>
[CmdletBinding(DefaultParameterSetName = 'Default',
supportsShouldProcess = $true,
HelpUri = 'https://github.com/BanterBoy')]
[OutputType([string])]
param
(
[Parameter(ParameterSetName = 'Default',
Mandatory = $false,
ValueFromPipeline = $true,
ValueFromPipelineByPropertyName = $true,
HelpMessage = 'Enter computer name or pipe input'
)]
[Alias('cn')]
[string[]]$ComputerName = $env:COMPUTERNAME,
[Parameter(ParameterSetName = 'Default',
Mandatory = $false,
ValueFromPipeline = $true,
ValueFromPipelineByPropertyName = $true,
HelpMessage = 'Enter computer name or pipe input'
)]
[Alias('cred')]
[ValidateNotNull()]
[System.Management.Automation.PSCredential]
[System.Management.Automation.Credential()]
$Credential,
[Parameter(ParameterSetName = 'Default',
Mandatory = $false,
ValueFromPipeline = $true,
ValueFromPipelineByPropertyName = $true,
HelpMessage = 'Enter the number of days past or pipe input')]
[Alias('dp')]
[int]$DaysPast = 1
)
BEGIN {
}
PROCESS {
foreach ($Computer in $ComputerName) {
if ($PSCmdlet.ShouldProcess("$($Computer)", "Find last Boot Time")) {
$Test = (Test-Connection -ComputerName $Computer -Ping -Count 1).Status
if ($Test -eq "Success") {
if ($Credential) {
try {
$StartTime = (Get-Date).AddDays(-$DaysPast)
Get-WinEvent -ComputerName $Computer -FilterHashtable @{
logname = 'System';
id = '1074'
} | Where-Object -Property TimeCreated -GT $StartTime
}
catch {
Write-Output "No Matching Events Found on $Computer"
}
}
else {
try {
$StartTime = (Get-Date).AddDays(-$DaysPast)
Get-WinEvent -ComputerName $Computer -FilterHashtable @{
logname = 'System';
id = '1074'
} | Where-Object -Property TimeCreated -GT $StartTime
}
catch {
Write-Output "No Matching Events Found on $Computer"
}
}
}
else {
Write-Output "Computer $Computer is not reachable."
}
}
}
}
END {
}
}
# Get-LastBootTime -ComputerName KAMINO, DANTOOINE, HOTH -DaysPast 100 | Format-Table -AutoSize -Wrap
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