how to invoke DOS commands thru powershell on a shared drive

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    by LeeC at 2012-10-18 12:21:35

    I wrote a sizable number of code components to perform a number of tasks around the office for the sake of automation; originally, I had them all on my local hard drive, and things were peachy keen.

    Then I had folks ask if they could run my scripts themselves. "Certainly," I said.

    Rather than copy the code to each person's system, it makes sense to store it locally on a network drive. As background, a lot of what happens is REST calls using CURL to a cloud-hosted application. The problem began to appear:

    First, to call curl.exe, I'm creating a string called $URL which looks like (for example) "'-X PUT –data @SetReporter.json ... e/'+$Issue and then
    cmd /c "curl.exe $URL"

    I had to do this because several hours of trial and error convinced me that I couldn't effectively use the ampersand with a string, and I had to have a string to pass to CURL. However, now that it's on a shared drive, I'm getting
    "CMD.EXE was started with the above path as the current directory.
    UNC paths are not supported. Defaulting to Windows directory."

    Second, and it's related, I can't call a java jar file using a batch file, for the same reason. I can't find anything that suggests I can pass parameters to CMD to change the current directory (nor am I certain I could do so and invoke an executable on a shared drive.)

    Suggestions, anybody?


    by nohandle at 2012-10-19 03:36:05

    maybe i am oversimplifying the problem but:
    The cmd does not support \\unc\paths only m:\apped\drives.
    map the drive as a letter and retest

    btw invoking the curl.exe directly from powershell is not possible? &curl "argument argument" ?

    or in powershell 3 &curl –% argument argument

    by figueroa2david at 2012-10-23 15:57:56

    The easiest way to do this with a cmd.exe environment is to use a pushd entry.
    Pushd will change directories, including drive letters, and if you supply a UNC path, it will automatically map a drive, starting with z: and working backwards.

    In your case you might do something like create a batch file and use it..
    cmd.exe /c 'mybatch.cmd "$URL"'

    mybatch.cmd would contain:
    pushd \\server\share
    curl "%1"

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