CODEWITHSUNDEEP
powershellcmd
Cataster
Cataster

Reputation: 3551

Capture cmd error to file in CURRENT directory?

I have a PowerShell script that restarts servers listed in a file. 

foreach ($server in $servers) {
    try {
        cmd /c "shutdown.exe /r /f /m \\$server /t 0 /d p:0:0 /c 'PlannedRestart'" 
        "$server`tRestarted"
        "$server`tRestarted" | Out-File -FilePath .\RestartServers_LOG.txt -Append
    } catch {
        "$server`t" + cmd /c ">&1"
        "$server`t" + cmd /c "dir > .\RestartServers_LOG.txt 2>&1"
    }
}

I am trying to catch any errors that may occur from the CMD to output on the PowerShell session as well as to a file in the CURRENT directory, so in PowerShell that would be .\ but I don't know what the current directory specification is for CMD. Unless its the same thing?

Essentially, I am hoping to accomplish something similar to how we can capture the exception message of PowerShell like this:

"$server`t" + $_.Exception.Message.ToString().Split(":")[1].Replace("`n","") |
    Out-File -FilePath .\RestartServers_LOG.txt -Append

but CMD doesn't deal with exceptions like PowerShell, and instead STDERR.

Note: I am using the command shutdown.exe because PowerShell doesn't have ability to restart "planned" or "unplanned" unfortunately.

Upvotes: 0

Views: 144

Answers (1)

Ansgar Wiechers
Ansgar Wiechers

Reputation: 200503

Just do it the PoSh way:

$params = '/r', '/f',
          '/t', '0',
          '/d', 'p:0:0',
          '/c', 'PlannedRestart'

$servers | ForEach-Object {
    $output = & shutdown.exe /m "\\${_}" @params 2>&1
    if ($LastExitCode -eq 0) {
        "{0}`tRestarted" -f $_
    } else {
        "{0}`tRestart failed:`t{1}" -f $_, $output
    }
} | Set-Content '.\RestartServers_LOG.txt'

External commands don't throw exceptions in the first place, so your try..catch wouldn't do anything anyway.

Upvotes: 1

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