Testing for network availability

I am trying to write some scripts that return BIOS info using WMI.

I would like to check for the availability of a networked PC prior to
running the WMI command. Is there an easy way to do this?

I started by trying to use ping and return the ping time in ms but the
command is very convoluted and still needs work. Surely there must be an
easier way.

The basis of my current command:
(((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":" |
where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1] |
split-string "ms"

try this, TTL is available only if the destination is alive

ping $ComputerIP -n 1 | if ($_.Contains("TTL")) { do something} ....

$hay

"Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
>I am trying to write some scripts that return BIOS info using WMI.
>
> I would like to check for the availability of a networked PC prior to
> running the WMI command. Is there an easy way to do this?
>
> I started by trying to use ping and return the ping time in ms but the
> command is very convoluted and still needs work. Surely there must be an
> easier way.
>
> The basis of my current command:
> (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
> |
> where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
> |
> split-string "ms"

maybe this can help

http://lantoolbox.com/network-admini...om-powershell/

$hay

"Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
>I am trying to write some scripts that return BIOS info using WMI.
>
> I would like to check for the availability of a networked PC prior to
> running the WMI command. Is there an easy way to do this?
>
> I started by trying to use ping and return the ping time in ms but the
> command is very convoluted and still needs work. Surely there must be an
> easier way.
>
> The basis of my current command:
> (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
> |
> where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
> |
> split-string "ms"

Thanks for the help $hay

Could not seem to pipe into an If statement so ended up with this to
develope on:

ForEach ( $i in 221..225 )
{
$ComputerIP = "192.168.1." + $i

$PingResponse = ping $ComputerIP -n 1

#--Set $Available to false
$Available = (1 -eq 2)

ForEach ($line in $PingResponse)
{
#--If reply contains TTL set $Available to True
If ($line.Contains("TTL")){$Available = (1 -eq 1)}
}

If($Available)
{
write-host -ForegroundColor GREEN $ComputerIP" - AVAILABLE"
}
Else
{
write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
}
}


"$hay" wrote:

> maybe this can help
>
> http://lantoolbox.com/network-admini...om-powershell/
>
> $hay
>
> "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
> news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
> >I am trying to write some scripts that return BIOS info using WMI.
> >
> > I would like to check for the availability of a networked PC prior to
> > running the WMI command. Is there an easy way to do this?
> >
> > I started by trying to use ping and return the ping time in ms but the
> > command is very convoluted and still needs work. Surely there must be an
> > easier way.
> >
> > The basis of my current command:
> > (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
> > |
> > where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
> > |
> > split-string "ms"
>
>
>

Check out http://sapien.eponym.com/blog/_archi...8/2549814.html which has the following example function:

Function Ping-Name {
PROCESS {
$wmi = get-wmiobject -query "SELECT * FROM Win32_PingStatus WHERE Address = '$_'"
if ($wmi.StatusCode -eq 0) { $_ }
}
}

The wmi call basically tells the local PC to ping the remote address and returns statuscode of 0 if successful. The way this function is setup, you can use it like a cmd-let and PIPE a list of machines to ping and returns ONLY live machines. You can use IP addresses or hostnames.

As an alternate to your foreach method, you can create a list of computers using:

PS ps:\> $computerips = @()
PS ps:\> 221..225 | % { $computerip += "192.168.1.$_" }

Then pipe this to Ping-Name like so:

PS ps:\> $computerips | Ping-Name

--

gaurhoth
http://gaurhothw.spaces.live.com/


"Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message news:B6EDED6D-8F0B-4A51-9FC4-8B4E7AB15EB4@microsoft.com...
> Thanks for the help $hay
>
> Could not seem to pipe into an If statement so ended up with this to
> develope on:
>
> ForEach ( $i in 221..225 )
> {
> $ComputerIP = "192.168.1." + $i
>
> $PingResponse = ping $ComputerIP -n 1
>
> #--Set $Available to false
> $Available = (1 -eq 2)
>
> ForEach ($line in $PingResponse)
> {
> #--If reply contains TTL set $Available to True
> If ($line.Contains("TTL")){$Available = (1 -eq 1)}
> }
>
> If($Available)
> {
> write-host -ForegroundColor GREEN $ComputerIP" - AVAILABLE"
> }
> Else
> {
> write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
> }
> }
>
>
> "$hay" wrote:
>
>> maybe this can help
>>
>> http://lantoolbox.com/network-admini...om-powershell/
>>
>> $hay
>>
>> "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
>> news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
>> >I am trying to write some scripts that return BIOS info using WMI.
>> >
>> > I would like to check for the availability of a networked PC prior to
>> > running the WMI command. Is there an easy way to do this?
>> >
>> > I started by trying to use ping and return the ping time in ms but the
>> > command is very convoluted and still needs work. Surely there must be an
>> > easier way.
>> >
>> > The basis of my current command:
>> > (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
>> > |
>> > where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
>> > |
>> > split-string "ms"
>>
>>
>>

Thanks again, now got:

ForEach ( $i in 221..225 )
{
$ComputerIP = "192.168.1." + $i

If(((gwmi Win32_PingStatus -Filter "Address='$ComputerIP'").StatusCode) -eq
0)
{
write-host -ForegroundColor GREEN $ComputerIP" - AVAILABLE"
}
Else
{
write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
}
}


"Gaurhoth" wrote:

> Check out http://sapien.eponym.com/blog/_archi...8/2549814.html which has the following example function:
>
> Function Ping-Name {
> PROCESS {
> $wmi = get-wmiobject -query "SELECT * FROM Win32_PingStatus WHERE Address = '$_'"
> if ($wmi.StatusCode -eq 0) { $_ }
> }
> }
>
> The wmi call basically tells the local PC to ping the remote address and returns statuscode of 0 if successful. The way this function is setup, you can use it like a cmd-let and PIPE a list of machines to ping and returns ONLY live machines. You can use IP addresses or hostnames.
>
> As an alternate to your foreach method, you can create a list of computers using:
>
> PS ps:\> $computerips = @()
> PS ps:\> 221..225 | % { $computerip += "192.168.1.$_" }
>
> Then pipe this to Ping-Name like so:
>
> PS ps:\> $computerips | Ping-Name
>
> --
>
> gaurhoth
> http://gaurhothw.spaces.live.com/
>
>
> "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message news:B6EDED6D-8F0B-4A51-9FC4-8B4E7AB15EB4@microsoft.com...
> > Thanks for the help $hay
> >
> > Could not seem to pipe into an If statement so ended up with this to
> > develope on:
> >
> > ForEach ( $i in 221..225 )
> > {
> > $ComputerIP = "192.168.1." + $i
> >
> > $PingResponse = ping $ComputerIP -n 1
> >
> > #--Set $Available to false
> > $Available = (1 -eq 2)
> >
> > ForEach ($line in $PingResponse)
> > {
> > #--If reply contains TTL set $Available to True
> > If ($line.Contains("TTL")){$Available = (1 -eq 1)}
> > }
> >
> > If($Available)
> > {
> > write-host -ForegroundColor GREEN $ComputerIP" - AVAILABLE"
> > }
> > Else
> > {
> > write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
> > }
> > }
> >
> >
> > "$hay" wrote:
> >
> >> maybe this can help
> >>
> >> http://lantoolbox.com/network-admini...om-powershell/
> >>
> >> $hay
> >>
> >> "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
> >> news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
> >> >I am trying to write some scripts that return BIOS info using WMI.
> >> >
> >> > I would like to check for the availability of a networked PC prior to
> >> > running the WMI command. Is there an easy way to do this?
> >> >
> >> > I started by trying to use ping and return the ping time in ms but the
> >> > command is very convoluted and still needs work. Surely there must be an
> >> > easier way.
> >> >
> >> > The basis of my current command:
> >> > (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
> >> > |
> >> > where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
> >> > |
> >> > split-string "ms"
> >>
> >>
> >>

Something that might be easier to work with

ping $i
if ($(arp -a $i) -ne "No ARP Entries Found"){

"Andy Webster" wrote:

> I am trying to write some scripts that return BIOS info using WMI.
>
> I would like to check for the availability of a networked PC prior to
> running the WMI command. Is there an easy way to do this?
>
> I started by trying to use ping and return the ping time in ms but the
> command is very convoluted and still needs work. Surely there must be an
> easier way.
>
> The basis of my current command:
> (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":" |
> where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1] |
> split-string "ms"

Finally, a list of available IPs and their BIOS versions, thanks for all the
help:

ForEach ( $i in 221..225 )
{
$ComputerIP = "10.178.225." + $i

If(((gwmi Win32_PingStatus -Filter "Address='$ComputerIP'").StatusCode) -eq
0)
{
write-host -ForegroundColor GREEN $ComputerIP - (Get-WmiObject WIN32_BIOS
-ComputerName $ComputerIP).SMBIOSBIOSVersion
}
Else
{
write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
}
}


"Gaurhoth" wrote:

> Check out http://sapien.eponym.com/blog/_archi...8/2549814.html which has the following example function:
>
> Function Ping-Name {
> PROCESS {
> $wmi = get-wmiobject -query "SELECT * FROM Win32_PingStatus WHERE Address = '$_'"
> if ($wmi.StatusCode -eq 0) { $_ }
> }
> }
>
> The wmi call basically tells the local PC to ping the remote address and returns statuscode of 0 if successful. The way this function is setup, you can use it like a cmd-let and PIPE a list of machines to ping and returns ONLY live machines. You can use IP addresses or hostnames.
>
> As an alternate to your foreach method, you can create a list of computers using:
>
> PS ps:\> $computerips = @()
> PS ps:\> 221..225 | % { $computerip += "192.168.1.$_" }
>
> Then pipe this to Ping-Name like so:
>
> PS ps:\> $computerips | Ping-Name
>
> --
>
> gaurhoth
> http://gaurhothw.spaces.live.com/
>
>
> "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message news:B6EDED6D-8F0B-4A51-9FC4-8B4E7AB15EB4@microsoft.com...
> > Thanks for the help $hay
> >
> > Could not seem to pipe into an If statement so ended up with this to
> > develope on:
> >
> > ForEach ( $i in 221..225 )
> > {
> > $ComputerIP = "192.168.1." + $i
> >
> > $PingResponse = ping $ComputerIP -n 1
> >
> > #--Set $Available to false
> > $Available = (1 -eq 2)
> >
> > ForEach ($line in $PingResponse)
> > {
> > #--If reply contains TTL set $Available to True
> > If ($line.Contains("TTL")){$Available = (1 -eq 1)}
> > }
> >
> > If($Available)
> > {
> > write-host -ForegroundColor GREEN $ComputerIP" - AVAILABLE"
> > }
> > Else
> > {
> > write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
> > }
> > }
> >
> >
> > "$hay" wrote:
> >
> >> maybe this can help
> >>
> >> http://lantoolbox.com/network-admini...om-powershell/
> >>
> >> $hay
> >>
> >> "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
> >> news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
> >> >I am trying to write some scripts that return BIOS info using WMI.
> >> >
> >> > I would like to check for the availability of a networked PC prior to
> >> > running the WMI command. Is there an easy way to do this?
> >> >
> >> > I started by trying to use ping and return the ping time in ms but the
> >> > command is very convoluted and still needs work. Surely there must be an
> >> > easier way.
> >> >
> >> > The basis of my current command:
> >> > (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
> >> > |
> >> > where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
> >> > |
> >> > split-string "ms"
> >>
> >>
> >>

Nevermind. I just realized the problem with that approach. Works good on
the local network, but falls down once you cross a router.

"Rob Campbell" wrote:

> Something that might be easier to work with
>
> ping $i
> if ($(arp -a $i) -ne "No ARP Entries Found"){
>
> "Andy Webster" wrote:
>
> > I am trying to write some scripts that return BIOS info using WMI.
> >
> > I would like to check for the availability of a networked PC prior to
> > running the WMI command. Is there an easy way to do this?
> >
> > I started by trying to use ping and return the ping time in ms but the
> > command is very convoluted and still needs work. Surely there must be an
> > easier way.
> >
> > The basis of my current command:
> > (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":" |
> > where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1] |
> > split-string "ms"

FWIW -

if ([bool]$Pingresponse -like "*TTL*")



"Andy Webster" wrote:

> Thanks for the help $hay
>
> Could not seem to pipe into an If statement so ended up with this to
> develope on:
>
> ForEach ( $i in 221..225 )
> {
> $ComputerIP = "192.168.1." + $i
>
> $PingResponse = ping $ComputerIP -n 1
>
> #--Set $Available to false
> $Available = (1 -eq 2)
>
> ForEach ($line in $PingResponse)
> {
> #--If reply contains TTL set $Available to True
> If ($line.Contains("TTL")){$Available = (1 -eq 1)}
> }
>
> If($Available)
> {
> write-host -ForegroundColor GREEN $ComputerIP" - AVAILABLE"
> }
> Else
> {
> write-host -ForegroundColor RED $ComputerIP" - UNAVAILABLE"
> }
> }
>
>
> "$hay" wrote:
>
> > maybe this can help
> >
> > http://lantoolbox.com/network-admini...om-powershell/
> >
> > $hay
> >
> > "Andy Webster" <AndyWebster@discussions.microsoft.com> wrote in message
> > news:BD278623-84EA-44E7-A989-B2294F4D5A44@microsoft.com...
> > >I am trying to write some scripts that return BIOS info using WMI.
> > >
> > > I would like to check for the availability of a networked PC prior to
> > > running the WMI command. Is there an easy way to do this?
> > >
> > > I started by trying to use ping and return the ping time in ms but the
> > > command is very convoluted and still needs work. Surely there must be an
> > > easier way.
> > >
> > > The basis of my current command:
> > > (((ping $ComputerIP -n 1 | where {$_.Contains("Reply")} | split-string ":"
> > > |
> > > where {$_.Contains("time")} | split-string " ")[2]) | split-string "=")[1]
> > > |
> > > split-string "ms"
> >
> >
> >